An Alameda warehouse fire broke out at a vacant multistory building on Rainbow Court at the former Alameda Naval Air Station site. Firefighters brought the blaze under control, no injuries were reported, and officials had not determined the cause.

Firefighters responded to a large blaze at a vacant multistory warehouse in Alameda, California, after flames broke out early Thursday, according to the Alameda Fire Department.

Crews were dispatched at about 1:15 a.m. local time to the property on Rainbow Court, near Tower and Orion streets and south of Midway Avenue.

Fire erupts at former Alameda Naval Air Station

The warehouse is located within the former Alameda Naval Air Station site. Authorities said the building was vacant when the fire occurred, and no injuries were reported.

Fire crews worked through the early morning to contain the blaze. The Alameda Fire Department later reported that the fire had been knocked down, bringing the active flames under control.

Alameda firefighters remain at Rainbow Court

Firefighters were expected to remain at the property for several hours after the main fire was extinguished as operations continued at the scene.

Officials had not released details about the extent of damage to the multistory warehouse. It also was not immediately clear whether surrounding buildings or other property were affected.

Warehouse fire investigation continues

The cause of the Alameda warehouse fire was not immediately known. Authorities had not announced what may have started the blaze or identified any possible contributing factors.

With no injuries reported and the active fire under control, the focus was expected to shift to completing fireground operations and determining how the blaze began. Additional information about the damage and investigation had not been released.