LANCASTER, Pa. (CBS) – Two people, including a child, were killed in a row home fire that broke out in Lancaster City early Monday morning.

Authorities say the fire broke out at about 4:30 a.m. at home in the 200 block of East Madison Street. A woman and a six-year-old child were pronounced dead at the scene. Two other occupants of the home escaped unharmed.

Three firefighters were injured while battling the blaze. One suffered second degree burns and was flown to Crozer-Chester Medical Center for treatment while the other two suffered only minor injuries and were treated and released.

The cause of the fire is under investigation.