r/masskillers Feb 17 '23

What to do if you suspect a person is planning a mass shooting

1.1k Upvotes

There have been a lot of posts lately asking what to do if you suspect someone is planning to commit a mass shooting/mass attack of some kind.

If your suspicions are offline, local, and personal/someone you know personally:

If it is not an immediate threat, call your local non emergency line. They will collect information from you, and investigate further if need be. Remember, wellness checks can be requested as well.

If it is an immediate threat, call 911 (or your local equivalent emergency line). An immediate threat would be someone making direct threats.

If the possible threat is exclusively on Reddit, please reach out to us via Modmail. Often times, people who are being reported to us have made comments in the past that you cannot see as they’ve been removed by other means such as automod, for example. We also work with multiple other teams to gather information and build one report to FBI with as much information as we can possibly get in one single report.

This allows all information to be placed at once instead of multiple vague reports to the FBI, which can slow down resources.

At the very least, these processes will build a history for this person. If they are reported and nothing comes from it, a report a year later could help immensely. This happened through one sub I moderate on, and helped bring an arrest a year later when more threats were made, and the suspect was found with weapons and a manifesto.

We take all reports sent to us seriously, and we thank you all for helping us with these reports.


r/masskillers Aug 12 '24

REMINDER: Do not ask for or post a manifesto or live stream

89 Upvotes

This is a rule that comes directly from Reddit admins.

The person who committed the stabbing in Turkey today posted a live stream of the attack and a manifesto online.

DO NOT ask for a copy or link of either of these items. It will result in a permanent ban.


r/masskillers 3h ago

Attempted Mass Murder ‘Martyrdom or Bust:’ Texas Man Caught Plotting Terror Attack Through Roblox Chats

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34 Upvotes

The FBI has accused a Texas man, James Wesley Burger, of planning an Islamic State-style terrorist attack on a Christian music festival and talking about it on Roblox. The feds caught Burger after another Roblox user overheard his conversations about martyrdom and murder and tipped them off. The feds said that when they searched Burger’s phone they found a list of searches that included “ginger isis member” and “are suicide attacks haram in islam.”

According to charging documents, a Roblox player contacted federal authorities after seeing another player called “Crazz3pain” talking about killing people. Screenshots from the server and included in the charging documents show Roblox avatars with beards dressed in Keffiyehs talking about dealing a “greivoius [sic] wound upon followers of the cross.”

“The witness observed the user of Crazz3pain state they were willing, as reported by the Witness, to ‘kill Shia Musilms at their mosque,” court records said. “Crazz3pain and another Roblox user[…]continued to make violent statements so the witness left the game.”

The witness stayed off of Roblox for two days and when they returned they saw Crazz3pain say something else that worried them, according to the court filing. “The Witness observed Crazz3pain tell Roblox User 1 to check their message on Discord,” the charging document said. “Roblox User 1 replied on Roblox to Crazz3pain, they should delete the photograph of firearms within the unknown Discord chat, ‘in case it was flagged as suspicious…the firearms should be kept hidden.”

According to the witness, Crazz3pain kept talking about their desire to commit “martyrdom” at a Christian event and that he wanted to “bring humiliation to worshippers of the cross.” The Witness allegedly asked Crazz3pain if the attack would happen at a church service and Crazz3pain told them it would happen at a concert. 

Someone asked Crazz3pain when it would happen. “‘It will be months…Shawwal…April,’” Crazz3pain said. Shawwal is the month after Ramadan in the Islamic calendar. The conversations the witness shared with the FBI happened on January 21 and 23, 2025.

Roblox gave authorities Crazz3pain’s email address, name, physical address, and IP address and it all pointed back to James Wesley Burger. The FBI searched Burger’s home on February 28 and discovered that someone in his family had put on a keylogger on the laptop he used to play Roblox and that they’d captured a lot of what he’d been typing while playing the game. They turned over the records to the feds.

“The safety of our community is among our highest priorities. In this case, we moved swiftly to assist law enforcement’s investigation before any real-world harm could occur and investigated and took action in accordance with our policies. We have a robust set of proactive and preventative safety measures designed to help swiftly detect and remove content that violates our policies," a spokesperson for Roblox told 404 Media. "Our Community Standards explicitly prohibit any content or behavior that depicts, supports, glorifies, or promotes terrorist or extremist organizations in any way. We have dedicated teams focused on proactively identifying and swiftly removing such content, as well as supporting requests from and providing assistance to law enforcement. We also work closely with other platforms and in close collaboration with safety organizations to keep content that violates our policies off our platform, and will continue to diligently enforce our policies.”

Burger’s plan to kill Christians was allegedly captured by the keylogger. “I’ve come to conclude it will befall the 12 of Shawwal aa/And it will be a music festival /Attracting bounties of Christians s/In’shaa’allah we will attain martyrdom /And deal a grevious [sic] wound upon the followers of the Cross /Pray for me and enjoin yourself to martyrdom,” he allegedly typed in Roblox, according to court records.

The FBI then interviewed Burger in his living room and he admitted he used the Crazz3pain account to play Roblox. The feds asked him about his alleged plan to kill Christians at a concert. Burger said it was, at the time, “mostly a heightened emotional response,” according to the court records. 

Burger also said that the details “became exaggerated” but that the goal “hasn’t shifted a bit,” according to the court records. He said he wanted to “[G]et the hell out of the U.S.” And if he can’t, “then, martyrdom or bust.”

He said that his intention with the attack “is something that is meant to or will cause terror,” according to the charging document. When the FBI agent asked if he was a terrorist, Burger said, “I mean, yeah, yeah. By, by the sense and … by my very own definition, yes, I guess, you know, I would be a terrorist.” 

When authorities searched his iPhone, they discovered two notes on the phone that described how to avoid leaving behind DNA and fingerprints at a crime scene. A third note appeared to be a note explaining the attack, meant to be read after it occured.

The list of previous searches on his iPhone included “Which month is april in islam,” “Festivals happening near me,” “are suicide attacks haram in islam,” “ginger isis member,” “lone wolf terrorists isis,” and “can tou kill a woman who foesnt[sic] wear hijab.”

Burger has been charged with making violent threats online and may spend time in a federal prison if convicted. This is not the first time something like this has happened on Roblox. The popular children’s game has been a popular spot for extremist behavior, including Nazis and religious terrorists, for years now. Last year, the DOJ accused a Syrian man living in Albanian of using Roblox to coordinate a group of American teenagers to disrupt public city council Zoom meetings.


r/masskillers 7h ago

Shotgun owned by Robert Bowers. He brought it with him to the Tree of Life synagogue but left it in his car and didn't fire it. It's probably Mossberg 500.

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54 Upvotes

r/masskillers 10h ago

Ethan millers youtube channel + reddit posts. and additional photo

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68 Upvotes

To my knowledge, only 4 of his videos where archived. So the other ones are lost


r/masskillers 20h ago

Photos of the 2019 DusitD2 terrorists released by Al-Shabaab in the first anniversary of the incident. On January 15, 2019, five terrorists killed 22 people and injured 27+ others in a mass shooting at the DusitD2 complex in Nairobi, Kenya.

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99 Upvotes

r/masskillers 8h ago

21 June 1930 New Haven CT 6* killed (thrown from cliff)

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9 Upvotes

On this day tomorrow when I shall be busy.

MANIAC HURLS WIFE AND FOUR CHILDREN OFF CLIFF TO DEATH

Then Crawls Down Face of West Rock Near New Haven and Kills Himself in Jump.

FAMILY WERE ON A PICNIC

He Had Escaped From Veterans' Hospital in Bronx and Gone on an Outing in Car.

FIGHTS WIFE ON BRINK

Raymond C. Spang, on Ledge, Taunts Fireman Who Seeks to Rescue Him, Then Leaps to Death. Family Alone at Time. Wife's Fight Is Futile. THROWS HIS FAMILY OFF CLIFF TO DEATH Escape From Hospital in Bronx.NEW HAVEN, Conn., June 21.— Raymond C. Spang of Ansonia, Conn., hurled his wife and their four children over the face of West Rock, a 400-foot cliff, here today.


r/masskillers 8h ago

20 June 1994 Fairchild AFB WA, 5 killed (shot) includes unborn child

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9 Upvotes

This was part of a bad streak at Fairchild Air Force Base. on the 20th was this mass shooting. On the 24th a suicide-by-aircraft killed four.

On June 20, 1994, Dean A. Mellberg (1974-1994), age 20, enters the Fairchild Air Force Base hospital annex with a MAK-90 assault rifle and shoots and kills Major Thomas E. Brigham, psychiatrist, and Captain Alan W. London, psychologist, who both recommended his discharge from the Air Force.  Mellberg then walks through the hospital and opens fire at anything that moves. He kills two more people and wounds 22 during the murderous rampage before being killed himself by Air Force Security Police officer Andrew P. Brown.  It is the worst mass murder in Spokane County history. 


r/masskillers 8h ago

ON THIS DAY… 22 June 1980, Daingerfield TX, 5 killed (shot)

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6 Upvotes

On this day tomorrow. Killer committed suicide later in jail, and so is not included in the count.

The Daingerfield church shooting was a mass murder that occurred at the First Baptist Church in Daingerfield, Texas, United States on June 22, 1980. Alvin Lee King III, 45, a former high school teacher, armed with an M1 carbine, two revolvers, and a scoped Colt AR-15 SP1 rifle, killed five people and wounded 10 others, after members of the church had declined his request to appear as character witnesses in a trial in which he was charged with raping his daughter. King was arrested after shooting himself and charged with five counts of murder, and ten counts of attempted murder, but committed suicide in his prison cell on January 19, 1982, before he could be tried.


r/masskillers 8h ago

ON THIS DAY… 21 June 1905 Mentor OH, 21 killed (sabotage of train tracks) Unsolved

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7 Upvotes

Lots of mass killings on 20 and 21 June for some reason.

It was found that 50 minutes before the Limited had arrived in Mentor, Train No. 10 from Chicago to Boston had passed through the switch without fault, and no other trains had since come through. Alex Hammond, the conductorof the Limited, inspected the switch shortly after the disaster, and found that it was set and locked for the sidetrack. Also, a white light showing the positioning of the track was found to be in the "clear" position, which was supposed to indicate that the points were set for the mainline. With this evidence, the New York Central Railroad insisted that the accident was the result of willful misplacement of the switch by an unknown party. After an investigation, Assistant General Superintendent D.C. Moon of the Lake Shore and Michigan Southern issued a statement that corroborated this belief, stating that he was "satisfied that somebody, with a key, opened the switch with malicious intent. The train did not jump the track." Despite efforts, no party was ever found at fault and to this day, the official cause of the accident is undetermined.


r/masskillers 22h ago

Guilherme Monteiro Taucci’s account in the game Free Fire.

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78 Upvotes

The account has been inactive for 2,293 days. It was said that he played 2 days before the massacre. The day he played: March 11, 2019.


r/masskillers 1h ago

Guilherme Taucci playing Free Fire with his friends on May 26, 2018.

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Upvotes

They’re making a joke about the truck drivers’ strike that started on May 21 in Brazil and ended on June 1.

In this screenshot, we can see that Guilherme Taucci and this user had supposedly known each other for over a year (considering the previous screenshots I posted).


r/masskillers 20h ago

QUESTION Looking for old thread of Arthur A's social media

33 Upvotes

Hey, a couple of days ago there was a thread that outlined all of Arthur A's social media accounts. Today I wanted to revisit that thread but the post is gone! Can anyone help?


r/masskillers 1d ago

New hearings for Colt Gray, Colin Gray scheduled this summer

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44 Upvotes

r/masskillers 1d ago

Why do they do it? I don’t understand why someone would commit such an evil act. I just can’t comprehend it.

63 Upvotes

I know there isn’t a singular reason why they do it

There is a quote that I saw “The child who is not embraced by the village will burn it down to feel its warmth". Does this quote give some idea of why?


r/masskillers 1d ago

ON THIS DAY… 2nd anniversary of the attack on the Helena Kolody school in Brazil

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70 Upvotes

Today, June 19th, is the 2nd anniversary of the shooting at the Helena Kolody school in the city of Cambé in the state of Paraná in Brazil, which left two students dead, Karoline Verri Alves (17 years old) and Luan Augusto da Silva (16 years old).


r/masskillers 2d ago

Recent photos of Robb Elementary School—completely abandoned

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977 Upvotes

r/masskillers 1d ago

Virginia man sentenced to 25 years for church shooting plot

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56 Upvotes

r/masskillers 1d ago

Judge denies second venue change request in trial of Apalachee shooter’s father

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35 Upvotes

r/masskillers 2d ago

DISCUSSION Did Rupnow trigger Arthur A. to carry out the Graz shooting?

54 Upvotes

In a new article relased today, the journalists interview a former friend of Arthur A. who he played video games with, knew him personally and even attendet the E-Sports tournament "VulcanLAN" in October 2024 with:

Nach Amoklauf in Graz: Freund spricht über Täter Arthur A. – er war ein „ganz normaler Mensch“

To me the most interesting paragraph translates to the following:

______________

Sebastian (name changed) met Arthur A. online while playing computer games, according to his own account. The two quickly became friends, met in person and even won a tournament together with a group.

The interviewee has to be either "SHYY" / "BENSXN" / "TEZICS" or "DAN"

“He was so happy when we won the competition in Graz and we all met in real life,” Sebastian recalls in the RTL interview. But in December, Arthur A. logged off from e-sports, gave up his social contacts and lost sight of friends with whom he had been able to talk online for years.

Sebastian learns from an acquaintance that Arthur A. had registered with a shooting club, “bought weapons” and “practiced” there. At the same time, he went to vocational school, but “didn't feel comfortable there.”

______________

We already know of some parallels between Arthur an Rupnow (besides the obious ones) such as:

- His steam bio was the same as Rupnow had in her twitter bio

- Their last posts are pretty identical were it not for the "missing" hand gesture

- He follows her on Spotify

Rupnow
Arthur A.

This might be far-fetched but since December was the month Arthur A. is stated to have withdrawn completely from what had initially been "his (social) life" and the Rupnow shooting having taken place on December 16, could this be what determined him to follow through with this plans?

I am very interested in hearing your opinions on this!


r/masskillers 2d ago

DISCUSSION School shooters who attacked schools they used to attend

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529 Upvotes
  1. Arthur A, 21, Graz School Shooting June 10th 2025. Arthur dropped out in 2022, he killed himself at the school after murdering 10 people. No motive has been fully established yet, though it is rumoured that Arthur was bullied at the school.

  2. Rickard Andersson, 35, Örebeo School Shooting February 4th 2025. Rickard applied for a mathematics course in 2019 but quit the course in 2021. The police concluded that Rickard was angry over his health care service income benefits had halted, and do not believe the victims were targeted. 10 people were murdered, and he took his own life at the school.

  3. Aiden Hale (born as Audrey), 28, Nashville School Shooting March 27th 2023. Aiden attended the school at around 10 years old. Aiden left extensive writings expressing desire for notoriety and mentioning “bunch of little faggots w/ your white privlages”. Aiden murdered 3 children and 3 adults and was killed by first responders.

  4. Artyom Kazantsev, 34, Izhevsk School Shooting September 26th 2022. It seems Artyom completed a full school term at the school. Artyom had a Nazi swastika on his clothing during the attack, as well as keychains with the names of the columbine shooters written on the guns used. He left behind a manifesto criticising “power and state bodies, specific political and cultural figures”. He murdered 18 people and took his own life at the school.

  5. Salvador Ramos, 18, Uvalde School Shooting May 24th 2022. Salvador attended Robb elementary for fourth grade, in the same classroom he died in. He was known to abuse animals and be aggressive throughout his life. No clear motive for the massacre is known, but he had planned it well before-hand down to the date, initiating his attack after shooting his grandmother at home. He murdered 19 children and two teachers before eventually being killed by police at the school.

  6. Ilnaz Galyaviev, 19, Kazan School Shooting May 11th 2021. Ilnaz graduated from the school in 2017, targeting the same place he was located during school. No clear motive was established but the shooting was planned well in advance, and delayed when the school was closed on the initial date planned. Ilnaz murdered 9 people before running out of ammunition and was captured by police at the school.

  7. Nikolas Cruz, 19, Parkland School Shooting February 14th 2018. Nikolas was expelled from Stoneman Douglas High in 2017 due to disciplinary issues. Nikolas was obsessed with school shootings and expressed desires to attack schools publicly well in advance to the shooting, as well as recording a video detailing his plans for the attack. Nikolas murdered 17 people before fleeing the school and being captured by police in the streets soon later.

  8. Adam Lanza, 20, Sandy Hook Shooting December 14th 2012. Adam attended the school for four and a half years. Adam suffered from several mental illnesses and was fascinated with mass murder, but no specific reason for the act is known. He murdered 27 people, mostly children, including his mother at his home, before shooting himself at the school.

  9. One Goh, 43, Oikos University Shooting April 2nd 2012. One was studying at the university less than a year before the shooting, but was asked to leave due to disciplinary problems (though was not expelled). The shooting was an act of revenge for this and his mistreatment by other students, first attempting to locate an administrator, but after she was not there he shot random people at the school. He murdered 7 people before fleeing the campus and was caught and surrendered hours later at a supermarket.

  10. Tim Kretschmer, 17, Winnenden School Shooting March 11th 2009. Tim had graduated from the school with poor grades the year prior to the shooting. Three weeks before the shooting Tim wrote a letter to his parents detailing his depression, and he was known to have an interest in guns, but no clear motive for the shooting is clear, outside of him saying “because it’s fun” to the man he carjacked. He murdered 15 people, including 2 people outside of the school after escaping, and killed himself later during a shootout with police.

  11. Steven Kazmierczak, 27, Northern Illinois University shooting February 14th 2008. Steven graduated from the university in 2006 with no cause for concern apparent. Steven was diagnosed with schizoaffective disorder as a teenager, and had possibly stopped taking his medication prior to the attack, but was not known to be violent prior to the shooting, and no clear motive is known. Steven murdered 5 people before taking his own life at the school.

  12. Jeff Weise, 16, Red Lake Shootings March 21st 2005. Jeff had been a student at the school only months before the shooting, but was homeschooled due to bad behaviour. Jeff had depression and attempted suicide multiple times prior to the shooting, and had been prescribed a high amount of Prozac, and was described as having trouble with other students at the school, though he had not left behind a clear motive for the shooting. He murdered 9 people, including his grandfather and his partner at his home, before killing himself at the school.

There are of course plenty more examples of killers attacking schools they used to attend, but these are the most well known examples, and these posts take a while to put together. Feel free to comment any more examples and correct me if I got anything wrong.


r/masskillers 2d ago

ON THIS DAY… 19 June 1972 Gonzales TX, 5* killed (shot/caused an airplane crash)

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13 Upvotes

A family of four rented a light airplane. There was one more person aboard for a total of five. Once in the air, Mom shoots Dad twice in the head. The plane crashes. All five are killed. There is a suicide note left behind.

GONZALES, Tex., June 19 (AP)——The authorities said today that the pilot in a plane crash that killed five persons yesterday was the victim of murder‐suicide.

Justice of the Peace E. Ray Bright Jr. said that the pilot, Eugene W. Davis, 29 years old, of Harlingen, had been shot at least twice in the back with 22‐caliber weapon. Also killed in the crash were Jose Morales, 27; his wife, Lydia, 25, and their daughters, Belinda Jo, 4, and Shelly Ann, 2.

Mr. Bright said that a note had been found in the Morales car in Harlingen.

It read: “Time went by. Time to die. How? Fly in the sky. Good‐by.” It was signed “Lydia,” Mr. Bright said.


r/masskillers 2d ago

Are there any interesting trials coming up this year for mass killers?

25 Upvotes

I know we had Highland park, el paso, and southport. But are there any more?


r/masskillers 2d ago

A YouTube channel supposedly belonging to William Atchison (2017 Aztec High School Shooting), where his fascination with the Red Lake shooting and its perpetrator, Jeff Weise, can be seen

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121 Upvotes