A fire severely damaged an auto body shop in the 1800 block of West First Street in San Fernando early Tuesday morning. A Los Angeles City Fire Department spokeswoman said firefighters arrived at the scene at 3:38 a.m. and found a one-story building engulfed in flames. Firefighters managed to knock down the blaze by 3:56 a.m. At least two cars and several pieces of equipment were destroyed, and the shop was gutted. One person inside the building sustained minor injuries, but was treated at the scene and released. The cause of the fire is under investigation.