A double-wide trailer in El Cajon was engulfed in flames in the early morning hours Sunday.
Police said the trailer and a parked car went up in flames inside a mobile home park in the 1200 block of East Washington Avenue near Second Street just after 1:30 a.m.
Heartland Fire doused the torched vehicles.
The car and the trailer were registered to the same owner. He was later found dead inside a third vehicle with a gunshot wound to the chest, according to El Cajon police Lt. Walt Miller.
His death is being investigated as a suicide, Miller said.