WASHINGTON (WJZ) — Firefighters rescued a man trapped under three floors of debris following a building collapse in northwest DC Thursday afternoon.

A five-story building under construction in the 900 block of Kennedy Street NW collapsed around 3:30 p.m. while severe weather moved through the region, officials said, although they wouldn’t say officially that weather was the cause of the collapse.

READ MORE: DC Fire K9 Kimber Helped Rescuers Find Man Trapped In Building Collapse Debris

One worker was trapped inside, but was rescued after an hour and a half. He was taken to an area hospital with serious, but non-life-threatening injuries.

About 30 people on the city’s technical rescue team and other firefighters worked their way through the rubble to rescue the man. Crews used specialized tools, including chainsaws, to work their way to the trapped man.

Four other people were transported to area hospitals with non life-threatening injuries. All other workers were accounted for, according to the construction company owner. Two homes left of the collapse were evacuated.

DC Fire’s K9 Kimber helped the team locate the trapped worker. The dog also searched the building for others trapped and did not find anyone else.

The investigation was turned over to DCRA after the man was rescued.

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CBS Baltimore Staff