Apple building suffers extensive damage in fire

A fireman walks through a lobby soaked with water at Apple headquarters in Cupertino, Calif., early Wednesday, Aug. 13, 2008. Firefighters battled a three-alarm fire that started late Tuesday, Aug. 12, 2008. (AP Photo/Paul Sakuma) less A fireman walks through a lobby soaked with water at Apple headquarters in Cupertino, Calif., early Wednesday, Aug. 13, 2008. Firefighters battled a three-alarm fire that started late Tuesday, Aug. 12, 2008. ... more Photo: Paul Sakuma, AP Photo: Paul Sakuma, AP Image 1 of / 4 Caption Close Apple building suffers extensive damage in fire 1 / 4 Back to Gallery

Firefighters worked until Wednesday morning to extinguish a three-alarm blaze on the top floor of an Apple computer office building in Cupertino, a fire captain said.

The fire broke out around 10 p.m. Tuesday in the area of a heating and air conditioning unit on the roof of the two-story Apple Six building at 20604 Valley Green Drive, Santa Clara County fire captain Daron Pisciotta said. Construction crews had been working on the unit when the fire started, he added.

No one was injured but smoke and water damage to the west wing of the 120,000-square-foot building was extensive. Firefighters controlled the blaze in about three hours but remained on the scene until 7 a.m.

"The cause appears to be accidental and related to construction," Pisciotta said