OAKLAND (CBS SF) — A blaze that engulfed two adjoining buildings in Oakland’s San Antonio District on Wednesday night displaced nearly three dozen people and might have been started by fireworks, a fire battalion chief said Thursday.

The blaze was first called in at 10:48 p.m. near 23rd Street and International Boulevard, a fire dispatcher said.

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The fire started in the back of the apartment and soon spread to an adjacent two-story building, taking down nearby power lines in the process.

Residents said they heard a loud bang before the fire started. There are 10 apartments and three businesses in the two buildings. Five dogs were reported missing.

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“There was some sort of explosion,” said one resident. “It sounded like a car crash in front.”

The American Red Cross has found shelter for the 33 displaced residents at the Ira Jenkins Community Center.

The fire was contained at 1:09 a.m. Thursday morning, according to fire dispatchers.

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No injuries have been reported. Investigators will be looking into the cause of the fire.