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Oakland, Calif. firefighters leave the scene of a fire in a vacant house in the 900 block of 24th Street in west Oakland, Thursday, Dec. 12, 2013. It was the third time the fire department had been called to battle a blaze in the boarded-up building in the last three months. (D. Ross Cameron/Bay Area News Group)

OAKLAND -- For the third time since September, a West Oakland fourplex was the site of a fire Thursday morning, officials said.

No one was in the two story building when the fire started about 6:25 a.m. in a pile of clothes and other items in an alleyway along side the east side of the structure, Battalion Fire Chief Melinda Drayton said.

The fourplex has addresses of 907 to 915 24th St. and is just west of Market Street.

Twenty firefighters responded to the scene and had the fire under control at 7:02 a.m. No firefighters were injured.

A damage figure was not immediately available.

Arson investigators were summoned to the scene.

Drayton said the same building caught fire last week. Some people were living there at the time but no one was injured and they had to seek other living arrangements.

In September the same building was damaged when an electrical problem related fire started in a duplex next door.

That fire caused more than $400,000 in damages to those two buildings as well as a third structure. No one was injured.