Search and rescue crews were attempting on Thursday to free a construction worker trapped inside a Washington D.C., building after it collapsed.
Several other workers who had been caught in the debris and injured had been removed, Washington Fire and EMS said on Twitter. There were no immediate details on their condition.
Local television stations reported that the trapped worker was injured but conscious and in contact with rescuers.
Images showed dozens of firefighters swarming over piles of wood left behind by the collapse, about 5 miles (8 km) north of the Capitol building, just east of Rock Creek Park.