OAKLAND, Calif. (KRON) — The Oakland Fire Department responded to a three-alarm fire at 6831 Aitken Drive, OFD said Thursday afternoon. Three homes were impacted by the fire, OFD said. Fire officials say the blaze was accidental.

The fire is near the Oakland Hills, in the Shepherd Canyon area. OFD was called to the fire at 4:17 p.m. A second alarm was called at 4:23 p.m., and a third was called at 4:26 p.m., OFD Chief Reginald Freeman said.

Fifty firefighters were on the scene. No injuries have been reported, and no evacuations have been ordered. One pet was rescued.

OFD said at 5:28 p.m. that crews are making “good progress” in knocking down the fire.

Freeman said the fire originated on the back porch of one property and spread to one building on either side of it. The cause of the fire is considered accidental. The house where the fire originated has collapsed, per OFD.

OFD advised people to stay off Shepherd Canyon Road, so emergency vehicles can access the scene.

Bay City News contributed to this story.