Trailer behind Northwest Fresno FoodMaxx bursts into flames

FRESNO, Calif. (KFSN) -- Firefighters are investigating a commercial fire in northwest Fresno early Saturday.

A trailer burst into flames at a loading dock behind a FoodMaxx around midnight. Firefighters kept the flames from spreading to the building but the smoke got in.

Three people were treated for smoke inhalation.

No serious injuries have been reported.