Four homes in 500 block of Radnor Street in Harrisburg were damaged by an early morning fire on Sunday.
According to Harrisburg Fire Chief Brian Enterline, one of the houses had fire on three floors when crews arrived on scene.
There was explosion of unknown origin while fire crews were working the fire, that caused part of the main building to collapse.
Weather and construction on the rear of the buildings made fighting the fire a challenge, according to Enterline.
Several firefighters received minor injuries, but were treated at the scene and able to return to fighting the fire.
Read the full story here.