Local media, including The Baltimore Sun and Fox 45 Baltimore, have reported an explosion blew apart a strip of row homes near Reisterstown Plaza. The exact location appears to be the 6500 block of Reisterstown Road in Northwest Baltimore. 

First responders have arrived on the scene and are searching for people in the rubble. Local media is saying one person has been pronounced dead and three others are in critical condition. 

Crews from Baltimore Gas and Electric and the Baltimore office of emergency management are investigating the explosion.

The Baltimore County Fire Department said the source of the explosion appears to be a gas leak. 

Twitter handle Baltimore Firefighters IAFF Local 734 tweeted a picture of the devastation, saying "(3) patients, all critical have been rescued by Firefighters. Special Rescue Operations units have arrived and are beginning to search and rescue the other patients. (6) #BCFDEMS medic units have been called. Units from @BaltCoFire have been called to help."