A massive fireball erupted at an Oakland warehouse storing painting equipment early Tuesday, turning the building located in East Oakland near the Coliseum into a pile of smoldering debris. Oakland Fire Battalion Chief Tracey Chin said crews were alerted to the fire by a 911 call at about 6:30 a.m. Arriving firefighters were confronted with massive flames and smoke billowing out of the building. Nearby power lines were also down. They quickly elevated the response to two alarms and took up defensive positions outside the burning one-story industrial building near the intersection of 72nd Avenue and Hawley Street. The building, containing paint supplies and equipment from the Oakland-based George E. Masker painting company, was a complete loss. The cause of the fire was not immediately known. There were no injuries resulting from the fire.