Suspicious fire breaks out at a former Vallejo fire station

VALLEJO, Calif. (KGO) -- Fire investigators in Vallejo say squatters may have started a two-alarm fire in an old fire station early this morning.

The fire was reported around six this morning at the old fire station on Railroad and G streets in Vallejo.

Firefighters broke out windows to vent the building. An investigation into the cause in underway.