Charles County Sheriff's Deputy found dead in a car died from self-inflicted wounds, police say

Investigators say an off-duty school resource officer who was found dead in a car on Indian Head Highway in Accokeek died of self-inflicted gunshot wounds.

Off-duty Corporal Patrick "P.J." Mann of the Charles County Sheriff's Office was a school resource officer assigned to St. Charles High School in Waldorf.

Mann was the only person in the vehicle when he died, investigators say.

A Prince George's County police officer was injured in a crash while he was investigating the incident.

The officer was inside his patrol car when he was struck.