OAKLAND, Calif. – Firefighters in Oakland are responding to a four-alarm fire at an old wooden Economy Lumber warehouse on Sunday. No injuries have been reported, but as many as 75 firefighters are at the scene, according to officials. No one was inside the warehouse during the fire, but the warehouse is now considered a loss. Oakland Fire Department was dispatched to the scene at 7:45 p.m. Officials say smoke is heading southeast and that residents in the area should consider heading inside and shutting their doors and windows to prevent smoke exposure. The fire put off a significant amount of heat due to the lumber material inside the warehouse. The warehouse was used for storage but was also the main showroom for doors and windows, the chief said. In the meantime, rail traffic in the area was closed in both directions while crews worked on the fire.