UPDATE

Fire to seven people are unaccounted for and more than 30 people, including 3 firefighters were injured after an explosion at an apartment complex in Montgomery County, Maryland.

WRC-TV/NBC4:

As many as seven people are unaccounted for after an explosion sparked a massive fire at an apartment building in Silver Spring, Maryland, fire officials say.

Firefighters at a station about a mile away felt the explosion at the Flower Branch Apartments just before midnight Wednesday, Montgomery County Fire Chief Scott Goldstein said.

“People were dropping children and jumping out of other windows,” Goldstein said. “Everybody was getting out of the building as rapidly as possible.”

The early morning fire tore through the large apartment complex, consuming at least two or three buildings, and causing significant structural damage and part of a building to collapse.

The force of the explosion blew debris into a parking lot across the street from the complex.