Thomas Matthew Crooks' parents contacted law enforcement Saturday, hours before he opened fire on former President Trump at a Pennsylvania campaign rally, a source told Fox News.
Crooks' mother and father told local police he was missing and they were concerned about his welfare.
It’s unclear if they knew he had an AR-15 rifle that belonged to his father. Police haven't disclosed their actions after being contacted.
Crooks' parents are cooperating with FBI investigators trying to determine a motive for the shooting that injured Trump and killed rally attendee Corey Comperatore.
Officials vetted Crooks' phone and social media accounts but haven't publicized the results.
The shooter's parents, Matthew and Mary Crooks, were both licensed professional counselors in Pennsylvania.
They received their social work licenses in 2002 and renewed them last year.
Crooks, a 2022 Bethel Park High School graduate, was shot dead by Secret Service snipers after opening fire at the rally in Butler.
The high school loner was a registered Republican but donated to a progressive campaign in 2021.
Crooks, along with his father, a registered Libertarian, was a member of a local gun club.
His mother was a registered Democrat.
The would-be assassin earned an associate degree in engineering science from Allegheny County Community College two months before the shooting.
ABC News reported he planned to attend Robert Morris University in the fall and had also been accepted to the University of Pittsburgh but chose not to attend.
Crooks served as a dietary aide at a local nursing home and asked for Saturday off because he had "something to do," according to CNN.