Oakland firefighters knock down fire at pot grow

OAKLAND, Calif. (KGO) -- Oakland firefighters have put out a one-alarm warehouse fire. It broke out around 2 a.m. in the area of 89th Avenue and G Street, east of the Coliseum.

Officials say there was a marijuana grow operation inside the warehouse. No one was there, when crews arrived. Investigators haven't said what started the fire and are not ruling out an electrical cause.