One person was hospitalized and others were evacuated Wednesday following a “hazmat incident” in which an unknown chemical was “aerosolized” at the FBI building in Windsor Mill, Maryland, according to local authorities.

A total of three individuals people were evacuated from the property, one of which is currently undergoing medical treatment for minor injuries at a nearby hospital, reports WJZ. The two other people’s condition is unknown at this time.

This story is developing. Check Breitbart News for updates.