A two-alarm fire early Wednesday, Nov. 11, collapsed an abandoned warehouse on Manseau Street at the former Hunters Point naval shipyard in San Francisco, ABC7 reported and CBS Bay Area reported. There were no reports of injuries.

CBS Bay Area said firefighters were called around 2:55 a.m. and found heavy fire in the structure. ABC7, citing San Francisco Fire Department Capt. Mariano Elias, said the alarm came around 3 a.m. Crews searched as far inside as they could and did not find anyone, both outlets reported, then shifted to fighting the fire from outside as the building collapsed on itself.

Firefighters told CBS Bay Area the fire was contained around 6:30 a.m. and that crews would remain on scene until it was extinguished. The department did not say what caused the fire.