BOULDER, Colo. (AP) -- Colorado authorities are letting hundreds more evacuees return to their scorched homes, as investigators try to determine what caused the 10-square-mile wildfire that destroyed at least 169 houses.
Officials aren't commenting on a Denver Post report that the blaze near Boulder may have started in a fire pit. The newspaper quoted an unidentified senior law enforcement official familiar with the investigation.
Firefighting operations are being scaled back and some crews are being relieved, six days after the wildfire erupted. They're hoping to have the fire fully contained by tomorrow evening.
Utility workers are restoring electricity to homes where about 2,000 residents have been allowed to return. But much of the area is dangerous because of downed power lines and poles, damaged roads and exposed mine shafts.
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