FBI documents reviewed by the New York Post reveal details about Thomas Matthew Crooks, the man who attempted to assassinate then-presidential candidate Donald Trump at a campaign rally in July 2024. The documents, provided to Senator Chuck Grassley for his investigation, include an FBI interview with Crooks’ father, Matthew, who describes his son as unusually quiet from birth and having social difficulties throughout childhood. Crooks developed a keen interest in firearms during the pandemic era, becoming proficient over several years of practice, and also showed technical skills by building equipment like gaming computers and security cameras.
Written by the local model on 2026-09-15,
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Newly released FBI interview documents reviewed by the New York Post provide fresh details about Thomas Matthew Crooks, the 20-year-old gunman who attempted to assassinate then-presidential candidate Donald Trump at a campaign rally in July 2024.
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who → release → July
The documents were provided to Senate judiciary committee chairman Chuck Grassley as part of his ongoing investigation into the July 13, 2024, shooting.
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documents → provide → shooting
Crooks’ father, Matthew, told investigators that his son had been unusually quiet from childhood.
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son → tell → childhood
“When Thomas was born he did not scream and he was always quiet from that point on,” he said, according to FBI interview notes.
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he → bear → notes
Matthew said he never developed a strong father-son bond with Crooks and described him as someone who rarely displayed strong emotions, seldom laughed and was difficult to read.
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who → say → emotions
Matthew recalled several incidents from Crooks’ childhood in which he acted out, including damaging a school desk because he was bored and wanted attention.
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he → recall → attention
By middle school, his parents suspected he had ADHD and were concerned about the group of children he was associating with.
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he → suspect → children
During his high-school years, Matthew said Crooks became increasingly quiet and reserved and developed difficulties communicating with teachers.
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Crooks → say → teachers
He also recalled that Crooks frequently talked to himself, a behaviour that became more noticeable as he grew older.
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he → recall → himself
Despite his social difficulties, Crooks performed well academically.
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Crooks → perform → difficulties
His father said Crooks put considerable pressure on himself because he feared he might not get into college.
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he → say → college
Crooks had expressed interest in several careers but did not appear committed to any of them.
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Crooks → express → them
At one point, he even considered joining the military and working on nuclear submarines, although his father said he appeared attracted to the idea because he thought it would be “cool”.
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it → consider → idea
Matthew also told investigators that Crooks never appeared to have a romantic interest in women and repeatedly denied being gay when the subject came up.
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subject → tell → women
Crooks became interested in guns as a teenager and began visiting a gun club around the time of the Covid-19 pandemic.
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Crooks → become → pandemic
His father initially considered him a poor shot.
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him → consider → ?
Matthew told investigators that Crooks was initially unable to hit the paper target and that it took several years of practice before his accuracy improved.
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accuracy → tell → practice
Crooks eventually became a skilled marksman and began experimenting with longer-range shooting.
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Crooks → become → shooting
His father recalled him explaining that he wanted to find out how far he could shoot using basic sights.
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he → recall → sights
After purchasing a prism sight, Crooks became increasingly knowledgeable about adjusting and zeroing it, according to his father.
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Crooks → purchase → father
His interest in firearms also extended to modifying and building equipment.
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interest → extend → equipment
Matthew told investigators that his son once attempted to make a Glock 19 using carbon-fibre plastic and household equipment.
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son → tell → plastic
Crooks also acquired a 3D printer and built a gaming computer and a security camera using a Raspberry Pi, according to the FBI interview notes.
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Crooks → acquire → notes
As Crooks' interest in firearms grew, he began ordering large numbers of parts, tools and other items online, his father told investigators.
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father → grow → investigators
He sometimes used the name “Bob Dole” as a delivery name.
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He → use → name
Matthew said the practice stemmed from Crooks' concerns after his father's bank account was compromised and fraudulent BetMGM charges appeared.
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charges → say → concerns
Crooks apparently believed that using an assumed name would make his purchases harder to trace or his accounts harder to hack.
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accounts → believe → name
His father tried to explain that the transactions would still be connected to the bank account being used, but Crooks continued using pseudonyms.
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Crooks → try → pseudonyms
Matthew also said his son introduced him to privacy tools and used several encrypted email services.
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son → say → services
Political views offered no clear motive
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views → offer → motive
The FBI documents also provide conflicting indications about Crooks' political interests, but his father said he did not appear strongly aligned with either major party.
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he → provide → party
One person interviewed by the FBI described Crooks as interested in history and politics and said he discussed Trump, Joe Biden and other political figures, including Marco Rubio.
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he → interview → Rubio
Matthew said Crooks identified as a Republican and opposed welfare programmes and what he called “woke” ideology, but did not strongly embrace Republican politics.
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he → say → politics
Instead, he preferred discussing government policy more generally and making fun of politicians.
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he → prefer → politicians
Crooks was registered as a Republican, although his father believed this was partly because of his own political affiliation.
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this → register → affiliation
Matthew also told investigators that his son did not believe the 2020 presidential election had been stolen and was shocked by the January 6, 2021, Capitol riot.
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election → tell → riot
Matthew said he was surprised to discover that Crooks had donated $15 to the Progressive Turnout Project, a Democratic organising group, in 2021.
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Crooks → say → 2021
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users → consider → opinion
FBI documents did not establish a clear political motive for the shooting.
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documents → establish → shooting
Crooks was killed by Secret Service personnel seconds after firing at Trump from a rooftop near the rally site.
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Crooks → kill → site
…and 3 more, not listed.
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