Thomas Crooks was talking to imaginary people, dancing alone in his room and even researched the distance for the ...

What drove a "nerdy engineering student on the dean's list" to attempt to take Donald Trump's life? It's a largely unanswered question, and one Steve Eder and Tawnell D. Hobbs attempt to chip away at ...

An investigation has revealed new details about the mental state of the suspect who opened fire at then-former President ...

Thomas Crooks was a nerdy engineering student on the dean’s list. He stockpiled explosive materials for months before his ...

Would-be presidential assassin Thomas Crooks did online searches about depression and got progressively deeper into guns and ...

Emails and essays obtained by CBS News shed new light on Thomas Matthew Crooks, the 20-year-old who opened fire at a Trump rally in Butler, Pennsylvania.

Thomas Matthew Crooks seen at the rally in Butler before attempting to assassinate former President Donald Trump. Iron-Clad-USA.com via Storyful “Everybody around here knows each other, but no ...

A 20-year-old man from Pennsylvania fired multiple shots at former President Donald Trump at a rally on Saturday evening. A bullet grazed the presumptive Republican presidential nominee's upper ...

The school district where former President Trump's would-be assassin Thomas Crooks attended high school put out a statement in an attempt to quell "any common misconceptions." Bethel Park School ...

BUTLER, Pennsylvania, July 17 (Reuters) - - Thomas Crooks was pacing next to a warehouse building outside the Butler Farm Show grounds as a crowd gathered for one of former President Donald Trump ...