A chemical explosion hit a Halethorpe research building near UMBC — but firefighters had it out in 12 minutes flat.

Officials are investigating a chemical explosion that happened Monday evening at a UMBC lab in Baltimore County.

A chemical explosion sent firefighters scrambling in Maryland late Monday afternoon. Crews were called to the 1400 block of South Rolling Road in Halethorpe at approximately 5:06 p.m. on Monday, Aug.

Baltimore County Fire is on the scene of an explosion in Halethorpe. Crews responded to reports of a chemical explosion in a multi-level building at 5:06 p.m.