Crews seek cause of empty Pittsburgh house explosion

PITTSBURGH (AP) - November 29, 2013

The explosion was reported Thursday night in the city's Oakland section, which is near the campus of the University of Pittsburgh and several other schools.

Fire Battalion Chief Jim Dolan says the damage was so severe that the house was in danger of collapsing by the time firefighters arrived.

No injuries have been reported, and the search for a cause continued Friday.

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