Video: Calif. Firefighters Battling Six-Alarmer at Apartment Complex

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REDWOOD CITY -- A spectacular six-alarm fire sent flames high into the early-morning sky as it ravaged a Redwood City apartment complex Thursday, injuring at least four and displacing multiple residents, authorities said.

As of 8 a.m., the flames had subsided, a cloud of white smoke continued to emanate from the four-story building at 926 Woodside Road.

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Because the fire flushed out so many residents, the American Red Cross was summoned and has set up an evacuation center at the Red Morton Community Center at 1120 Roosevelt Ave., where workers will be on hand to provide amenities and help find temporary housing.

At least 44 people had fled to the community center as of 8:30 a.m.

The fire was reported about 5:30 a.m. and forced the closure of Woodside -- which doubles as Highway 84 in the area -- for a roughly mile-long stretch between Gordon Street to the north and Massachusetts Avenue to the south.

At least four people were injured, according to the Redwood City Fire Department. Within 45 minutes, the roof of the building collapsed after being consumed by flames.