Crooks' father told agents he thought son took rifle to shooting range Saturday, reported him missing at 11 p.m.
From CNN's John Miller
The father of the would-be assassin who attempted to kill the former president Saturday, Matthew Crooks, told agents that he believed his son had taken the rifle Saturday to go to the shooting range and thought he would be back by around 1:00 p.m., according to law enforcement officials.
When his son - Thomas Matthew Crooks - had not returned, the elder Crooks called police and reported him missing at 11:00 p.m., the sources said.