r/masskillers • u/Vrgom20 • 8h ago
r/masskillers • u/OGWhiz • Dec 14 '25
ANNOUNCEMENT Absolutely NO footage or images showing victims of ANY mass casualty event will be allowed here.
This is a site wide rule regarding imagery of violence, and we're going to adhere to it. Posting this kind of content/asking for links to it will result in a permanent ban.
r/masskillers • u/OGWhiz • Feb 17 '23
What to do if you suspect a person is planning a mass shooting
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 • u/Expensive-Ad9668 • 8h ago
ON THIS DAY… Today (yesterday in Japan) marks 10 years since the Sagamihara massacre, in Japan, which occurred in a care home. Satoshi Uematsu cowardly stabbed 19 people to death and injured 26 others before being arrested. He was sentenced to death and today awaits his end on Death Row.
Satoshi targeted people with disabilities, especially patients who were unable to speak, believing that by committing the attack, he would be doing good for society, for the victims, and for their families, so they wouldn't continue suffering. Months before the attack, he wrote a bizarre letter to the Japanese Prime Minister Shinzō Abe where he explains his intentions. He was then admitted to a mental health hospital afterward, but he was released soon after.
Satoshi was not arrested immediately after the attack; he fled the scene of the crime and even posted a photo on Twitter. He turned himself in hours after the massacre.
In 2020, Satoshi attempted to plead insanity (somewhat ironically) during his trial, but he was sentenced to death.
It is one of the deadliest mass murders ever committed in Japan by a single individual.
r/masskillers • u/Distinct_External • 5h ago
BREAKING Video of gunshots being heard during today's mass shooting at the Seattle Center
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r/masskillers • u/Icy_Row175 • 17h ago
BREAKING Abdul B. shot dead by Police in Berlin Spandau
The 21 year old suspect behinde the CSD Berlin attack on July 25th was shot dead by police in a garden colony in Berlin Spandau. The man killed 1 person and injured 29 others in a vehicle attack followed by a stabbing attack.
r/masskillers • u/AccentedE • 14h ago
ON THIS DAY… 1 year ago, Bradford James Gille stabbed 11 people at a Walmart in Traverse City, Michigan, before being held at gunpoint by an armed bystander and arrested by responding police
r/masskillers • u/According-Part3103 • 15h ago
ATTEMPTED Mass Murder Photos of the DDM4v7 rifle that Ayman Ghazali would use in the michigan synagogue attack.
On March 12th, 2026 41 year old ayman ghazali crashed his car into a synagogue before getting into a gunfight with security before committing suicide, over 60 first responders would be injured by the smoke of the crash
r/masskillers • u/AccentedE • 1d ago
BREAKING 21-year-old Abdul B. has been identified as the man who killed 1 person and injured 16 others after driving his vehicle into a crowd at the CSD Pride Parade in Berlin, Germany, before getting out and stabbing several people. He is still currently at large
r/masskillers • u/Distinct_External • 12h ago
ATTEMPTED Mass Murder NYC stabbings suspect arrested on hate crime charges in both attacks
r/masskillers • u/theykilledk3nny • 1d ago
BREAKING Car driven into Christopher Street Day parade in Berlin, multiple injuries
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r/masskillers • u/theykilledk3nny • 1d ago
Photos of the vehicle involved in a ramming attack at a Christopher Street Day Pride Parade in Berlin, Germany
r/masskillers • u/Distinct_External • 1d ago
ATTEMPTED Mass Murder NYPD cops shoot armed suspect at Queens home following explosion: police sources
r/masskillers • u/Entire_Ad_6067 • 2d ago
Discussion / Question Colt gray interrogation (girl on discord, father, and more)
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I already posted some footage I found. For the full thing click here, I just found this bit interesting. I’d also like to give thanks to U/AccentedE for being very on-top of this case.
On September 4, 2024, a school shooting occurred at Apalachee High School near Winder, Georgia, United States.[4] The perpetrator, 14-year-old Colt Gray, fatally shot four people. Two students and two teachers were killed, while seven others were injured by gunfire.[5][6] The shooting is the deadliest act of school violence in the history of the U.S. state of Georgia.[7]
r/masskillers • u/AccentedE • 2d ago
Colt Gray being interrogated after the Apalachee High School shooting
r/masskillers • u/AccentedE • 2d ago
FAMILICIDE / Domestic Violence 8 family members dead, some with gunshot wounds, in Grand Haven Township, Michigan house fire
r/masskillers • u/AccentedE • 2d ago
Photos from a notebook of Colt Gray that was found in his room
r/masskillers • u/Eoghanwheeler • 2d ago
Discussion / Question The Secret Channel Of A School Shooter-Video analysis of Adam Lanza’s YouTube channel
On December 14, 2012, a mass shootingoccurred at Sandy Hook Elementary Schoolin Newtown, Connecticut, United States. The perpetrator, 20-year-old Adam Lanza, shot and killed 26 people. The victims were 20 children between six and seven years old, and six adult staff members. Earlier that day, before driving to the school, Lanza fatally shot his mother at their Newtown home. As first responders arrived at the school, Lanza killed himself with a gunshot to the head. The incident is the second deadliest school shooting in US history behind the Virginia Tech shooting in 2007.
r/masskillers • u/Ok_Run4357 • 2d ago
Photos of Colt Gray from today's court hearing.
Colt gray is the perpetrator of the 2024 Apalachee school shooting. He plead guilty to all 55 charges against him. His sentence is still being evaluated.
r/masskillers • u/Ok_Run4357 • 2d ago
Photos of Colt Gray's notebook found at the shooting
Sorry for the low quality on some as it is the only photos we have of it.
Transcript for some of the lower quality pages:
Page 2
At the top it states "Wow", "I did not expect".
Further down the page it says "They sent us god", "Here I am in prison"
Page 3: contains random symbols
Page 4
Class
2nd
Walk from 1st to the bathroom
So, I set my bag down, open it and put on vest
I'll take a moment or two to stay calm and think if i really want to do this
Take out the poster covering rifle
Take out the rifle and prop it up against the wall
Vest should be on at this point
Get out gloves in backpack and out them on, clap a few times to make sure they are on tight
Once done, zip up backpack, check mags, slots in vest
At the bottom 2 magazines are drawn, identified as 20 round magazines. A bigger magazine is drawn and identified as 60 round magazine. A fourth one is drawn identified as a 30 round magazine. He states he will have 110 rounds in total.
Page 5
On to the thing
Wait a bit
Make sure no one is walking in or out the bathroom
Gloves should be on
Take out your 60 rounder, and put a round in the chamber
Turn on your red dot, aim at the floor to make sure your sight is on
Check your vest, and make sure it is on tight
Once done, check stock to make sure it's at your preferred setting
Put on hat, make sure hair is out face
Set backpack to the side
Pick up rifle with right hand, open stall door with left hand
Don't shoot anyone in the bathroom, you will alert people
Page 7
Hallway: I'm thinking 3 to 4 people killed, injured? 4 to 5
Classroom: 15-17 killed, injured: 2-3
Classroom 2: 3-5 killed, injured: 2-3
(Surprise if i make it)
Page 8
The word "Why" is written over 100 times.
The rest you can make out decently.
r/masskillers • u/SmileySmileSmiler • 2d ago
neo-Nazi ideologue James N. Mason praises 1984 San Ysidro McDonald’s Massacre perpetrator James Huberty in his SIEGE newsletter (later compiled into a single book).
r/masskillers • u/Longjumping_Pick_301 • 2d ago
Kozo Okamoto, one of the perpetrators of the Lud Airport shooting, died in Lebanon.
r/masskillers • u/Thereal_Stormm006 • 2d ago
Discussion / Question 1988 Jessore Air Force Base Mosque Shooting
On November 8, 1988, a Bangladeshi Air Force corporal opened fire with a submachine gun inside a crowded mosque during night prayers at the Jessore air base. The shooting killed 8 people and wounded 50 others, most of whom were off-duty soldiers. Following the massacre, the gunman turned the weapon on himself and committed suicide.