Officials say Oakland police plan on searching a commercial building where firefighters responding to a blaze found at least 100 marijuana plants.
The Oakland Tribune reported that fire crews battling the blaze early Saturday in the building near the city's Auto Row found the plants, as well as lamps, a filtering system and altered electrical work.
Oakland fire Battalion Chief Emon Usher told the newspaper that when firefighters arrived they found flames shooting as high as 20 feet in the air.
Damage to the building was estimated to be $500,000. There were no injuries.