WASHINGTON (AP) — A senior FBI official says the gunman in the assassination attempt on former President Donald Trump searched online for events of both Trump and President Joe Biden and saw the Pennsylvania campaign rally where he opened fire last month as a “target of opportunity.” Kevin Rojek is the FBI’s top agent in Pittsburgh. He said Wednesday that Thomas Matthew Crooks, who shot at Trump before being killed by the Secret Service at the July 13 rally in Butler, Pennsylvania, did extensive research for an attack before the shooting and had looked at any number of events or targets. FBI officials say they had yet to uncover a motive despite conducting nearly 1,000 interviews in their investigation.