Iowa gunman Dylan Butler reportedly posted on social media site Discord saying he was ready 'for what's to come' and he was 'f****** nervous' before opening fire in small-town school

The gunman who opened fire on Perry High School last week appears to have posted on the social media site Discord about 'gearing up' moments before the attack.

Dylan Butler, 17, killed sixth grader Ahmir Jolliff, 11, and injured four other students and three staff members before he turned the gun on himself last Thursday.

Police are currently reviewing Butler's use of social media and tech platforms, including Discord, a source told NBC News.

Butler posted a video to TikTok from an account with the username 'tooktoomuch' in the minutes leading up to the shooting. A Discord account with a similar name, 'took2much' appears to also belong to the shooter. A Discord spokesperson told the outlet they believe the account belonged to Butler. 

The Discord account reportedly posted about being at the school and being ready 'for what's to come.' 

Dylan Butler, 17, (pictured) killed sixth grader Ahmir Jolliff, 11 , and injured four other students and three staff members before he turned the gun on himself last Thursday

Law enforcement officer at the scene of the shooting at Perry High School last week 

Hours before the shooting, the gunman posted a TikTok posing in what appeared to be the school bathroom, with the caption: 'Now we wait.'

The video was accompanied by the song 'Stray Bullet' by KMFDM, the same song used on the website of one of the shooters of the notorious Columbine High School massacre.

The Discord account also appeared to post about the shooting moments before Butler opened fire.

'I'm f***ing nervous, I'm the bathroom gearing up,' the user wrote, according to screenshots seen by the outlet. 

'There's a n----- in the bathroom, I need him to leave so I can assemble my guns' the account wrote two minutes later.

'The user was also part of a chatroom dedicated to discussing school shootings called "School Massacres Discussion,"' a Discord user who saw the user in the chat told NBC.

The Discord user said they had flagged the chatroom to the FBI in November, after which an FBI agent reached out over email and asked for more information. 

Law enforcement officers work at the scene of a shooting at Perry High School in Perry, Iowa, on Thursday

Dallas County Sherriff Adam Infante confirmed at a press conference that police officers arrived at the high school seven minutes after the first call was made

A woman walks out of the McCreary Community Building, which is the current reunification site for parents to find their children following the Perry School shooting 

Children hold hands with a man wearing an Iowa sweatshirt as they are reunited following the shooting 

The user emailed the FBI agent screenshots of the server but did not hear back. The chatroom was closed before the shooting.

'Our deepest sympathies are with the victims, their families, and the community in Perry, Iowa following yesterday's horrific shooting' a Discord spokesperson said. 

'Discord has a zero-tolerance policy against content that glorifies violence and violent extremism, which is reflected in our Community Guidelines. 

Adding: 'We took immediate action against the suspect and his content, and are currently cooperating with law enforcement to assist them in their continuing investigation.' 

Discord has previously been used by mass shooters, including the convicted shooter in the Buffalo shooting in 2022.

Butler was a senior at Perry High School and was armed with a pump-action shotgun and handgun - both of which are illegal for a 17-year-old to obtain in Iowa.

He also had a rudimentary explosive device - which was undetonated and was later rendered safe by fire marshals.

The 17-year-old died of a self-inflicted gunshot wound by the time first responders arrived at the school, shortly after 7.40am. The ordeal triggered a mass evacuation of 1,785 students on their first day of classes after winter break. Cops have yet to provide a possible motive.

One of the five people injured was the school's principal, Dan Marburger. The other four people injured were students.