An open steam valve in a lawmaker”s office caused the evacuation of a House office building on Capitol Hill, according to an Associated Press ( article citing a police report.

Officials evacuated the Longworth House Office Building after smoke (or steam) was seen coming from a room in the building. Police and fire officials investigated and let people back in the building after identifying an open steam valve as the source of the smoke (i.e., steam).

To read the full Associated Press article on this story, click here.