Discuss as:

Wilson N.Y. explosion levels home, kills one, injures four

Stephen M. Wallace / AP

Emergency personnel work the scene around a house after an explosion on July 24, in Wilson, N.Y.

Stephen M Wallace / AP

A Wrights Corners interior firefighter searches the burned out basement for a missing girl after an explosion on July 24 in Wilson, N.Y.

A blast leveled a house killing a 12-year-old girl and injuring her parents and two siblings, authorities said.

According  the Niagara County Undersheriff Michael Filicetti, Sarah Johnson's body was found in the debris at the rear of the Wilson N.Y. home, but her parents and two siblings were blown clear and were found in the front yard.

All four were being treated at a Buffalo hospital for serious injuries, he said. Officials were still working to determine the cause of the blast.

Sign up for the msnbc.com Photos Newsletter