The fires were reported about 2:15 a.m.in the 800 and 900 blocks of North Broadway. News video from the scene showed Los Angeles Fire Department personnel dousing flames at a street-facing business and at a small shack-like structure in the parking lot behind a two-story building.
A security guard who called 911 said an unidentified man was seen setting fires, according to the Los Angeles Police Department. A detailed description of the possible suspect was not available.
Officers arrived at the scene and conducted a search but no suspect was found.
No injuries were reported in the fires.