Thomas Matthew Crooks, 20 of Bethel Park, PA, was shot and killed by officials while still on the roof of a manufacturing plant about 130 yards, from the rally according to statements by officials.

Ellie Cook is a Newsweek security and defense reporter ... "The FBI has identified Thomas Matthew Crooks, 20, of Bethel Park, Pennsylvania, as the subject involved in the assassination attempt ...

Questions are swirling about Thomas Matthew Crooks, the 20-year-old gunman who was shot dead by Secret Service agents after he tried to assassinate Donald Trump as the former president spoke ...

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 Mathew Cooks, the gunman who attempted to assassinate the United States Republican presidential candidate, Donald Trump, searched online for events of the former president and President Joe ...

He has been identified as 20-year-old Thomas Matthew Crooks. One of Crooks’ bullets at Bethel Park grazed the former President in the ear during an outdoor rally in Butler, just outside Pittsburgh.

The shooter has been identified as Thomas Matthew Crooks, a 20-year-old from Bethel, Pa. and was described as a “loner.” He was killed on the scene by a Secret Service assault team.