Thomas Crooks’ cousin recalled the gunman’s father, Matthew Crooks, doing everything in his power to keep the two ...

A year after an assassination attempt shocked Butler County, the motives of the gunman, Thomas Matthew Crooks, remain largely ...

A monthslong investigation by CBS News punctures Thomas Crooks’ secrecy to reveal the broadest portrait yet of the lonesome ...

BETHEL PARK, Pa. — More than 40 miles from the attempted assassination of then-candidate and former President Donald Trump at ...

Thomas Matthew Crooks would President Trump in the ear, and mortally wound retired fire chief Corey Comperatore during a ...

President Trump reflects on the one-year anniversary of the Butler, Pennsylvania, assassination attempt that left one dead ...

The Senate Homeland Security Committee said the Secret Service's "lack of structured communication was likely the greatest ...

At the time of his death, Crooks, who had shown a gift for engineering projects, had been working on homemade explosives.

A report released by the Government Accountability Office says the United States Secret Service received information of a threat against Donald Trump just days before an assassination attempt at his ...

One year after the Butler assassination attempt on Trump, local residents and lawmakers question security preparations and lack of answers despite multiple federal investigations.

A state lawmaker has introduced legislation that will impose life prison sentences upon those convicted of an attack, plot or ...

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.