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Police investigate triple muder-suicide in Shaler Township, Pa.

The family's home
KDKA
The family's home
KDKA

(CBS/KDKA/AP) SHALER TOWNSHIP, Pa. - A father killed his wife and two young daughters before he shot himself inside their home in a suburb of Pittsburgh Sunday night, police said.

Police responded to the scene after initial reports of an argument and shots being fired. When police arrived they found four people inside with gunshot wounds to the head, reports CBS station KDKA.

"We have a young girl that's in the hallway leading back to the bedroom. We have a mother and an infant in the bed in the bedroom and the father in the bedroom in and around the closet area," Shaler Police Chief Jeff Gally said to the station.

The family had just moved into the rented home three to four weeks ago from Ross Township.

Police described the neighborhood as quiet and largely crime-free. The home where the shooting occurred is one of about 10 homes on a dead-end street in Shaler.

Investigators recovered a .357 handgun from the house.

Their identities have not been released and no motive has been determined at this time.

Shaler Township is a residential community of nearly 30,000 just minutes from downtown Pittsburgh.