3 Maryland firefighters dead, 1 in serious condition after partial building collapse

The cause of the fire that led to the partial building collapse in Baltimore is under investigation.

(CNN)Three firefighters died and one was in serious condition after responding to a two-alarm fire at a vacant row home in Baltimore on Monday, Fire Chief Niles Ford said at a news conference.

Four firefighters inside the burning home became trapped when the building partially collapsed, according to a tweet from Ford.
One firefighter was immediately pulled out and transferred to the University of Maryland Medical Center's Shock Trauma Center, where he was in serious condition, Niles said at the news conference, while three others remained trapped inside the structure.