Matthew Crooks, the father of would-be assassin Thomas Crooks, was seen in public for the first time since his son opened fire at former President Trump's rally in Pennsylvania. Investigators are trying to determine the motive behind the assassination attempt.
Key Points
Thomas Crooks attempted to assassinate former President Trump at a rally
Investigators are trying to piece together the events leading up to the attack
Crooks' family members, licensed counselors, have cooperated with the FBI