The US Federal Bureau of Investigations on Thursday released photos of Thomas Matthew Crooks’s firearm he used to attempt to assassinate former president and Republican presidential candidate Donald Trump, and details of his attack plans, which targeted both Trump and Biden and several events.

Crooks’ internet searches indicated he was planning the attack for a while and seemed to have been considering Joe Biden as a target as well as Trump.

Kevin Rojek, special agent in charge of the FBI Pittsburgh Field Office, said Crooks “had a sustained detailed effort to plan an attack on some event, meaning he looked at any number of events or targets.”