Thomas Crooks, the gunman who tried to assassinate former US president Donald Trump on July 13, spent months tracking down a gathering to target before settling on the Republican presidential candidate's rally in Pennsylvania, FBI officials said on Wednesday. Kevin Rojek, the FBI's top official in western Pennsylvania, said the FBI has not yet been able to determine Crooks' motive in trying to assassinate Trump, as the gunman's computer activity did not show definitively that he was motivated by either a left- or right-leaning political ideology.
