Pennsylvania house fire kills 7 adults, 3 children, criminal probe underway

Fire tore quickly through a house in the wee hours of Friday, killing seven adults and three children and horrifying a volunteer firefighter who arrived to battle the blaze only to discover that the victims were his family, authorities said.

A criminal investigation into the fire is underway, authorities said. The children who died in the fire were ages 5, 6 and 7, Pennsylvania State Police said in a news release.