An explosion and fire tore through a Gaithersburg, Maryland, condo building Wednesday morning, sending 12 people to the hospital. Two of the victims had critical injuries.
Montgomery County Fire Chief Scott Goldstein said during a press conference that four children were among those injured. The two people with grave injuries are adults.
The explosion happened around 8:40 a.m. at the Potomac Oaks Condominium near the 800 block of Quince Orchard Boulevard.
It took responding firefighters about 40 minutes to contain the two-alarm fire, at which point search and rescue operations began.
Mr. Goldstein told reporters he was unsure how many people were unaccounted for.