Silver Springs, WA – Two Silver Spring apartment buildings were evacuated Thursday afternoon for a possible carbon monoxide leak, and EMS crews are evaluating at least one sick person.

Firefighters and a hazmat team were called to the 2300 block of Glenmont Circle after a carbon monoxide alarm went off, Montgomery County Fire & EMS said.

Firefighters found a high carbon monoxide reading in a boiler room. They are ventilating the scene and evaluating occupants.