It was initially categorized as a 4-alarm fire before being upgraded to a 7-alarm fire later in the evening, according to social media statements from BCFD.Start the day smarter. Get all the news you need in your inbox each morning.

A massive blaze in a mattress warehouse in Baltimore has been contained to the building after a response including more than 200 firefighters.

Subsurface levels were stacked with mattresses, the city's fire chief said, and the blaze had grown to seven alarms by early Tuesday.