At least one man was injured on Sunday in an explosion at a storage unit in Santee.

About 12:15 p.m., firefighters and sheriff’s deputies were on the scene at the unit in the 10100 block of Mission Gorge Road, according to Heartland Fire & Rescue.

At least one man was injured by the blast, suffering burns to his back, according to Heartland Fire and Rescue.

Fire investigators said the man went once a month to the facility to start a truck he stored there. When he turned on the truck this afternoon a spark ignited fuel that had leaked from the vehicle, according to San Diego 6.

At least six adjoining storage units also were damaged in the explosion, San Diego 6 reported.

— City News Service