Emergency crews responded to an early morning fire caused by an explosion in Allentown, Pennsylvania.
A three-alarm fire broke out on Fountain Street after an explosion. Ten row homes were also burned, Allentown Fire Chief Jim Wehr said. Twenty-one people have been displaced and one person remains unaccounted for, but it is uncertain if that person was home, Wehr said.
Wehr said that residents were evacuated and are on busses. He said that the Red Cross has been notified and that they are providing assistance. One firefighter sustained a shoulder injury while fighting the fire, and was taken to the hospital. He has since been released. Five of the homes are still burning. It is not clear what caused the explosion.