One of the children was hospitalized in critical condition.

Two teenagers have been arrested in Oklahoma after the bodies of five people, believed to be relatives, were found at a house.

One youth was taken to the hospital in critical condition, and another youth was found unharmed.

Police say the suspects and victims are all related.

Broken Arrow is on the Arkansas River just southeast of Tulsa and the home is in a well-established neighborhood surrounded on three sides by the Indian Springs Country Club. Thomas Cooper said officers were called to an address Wednesday night around 11:30 p.m. for an unknown problem.

Cooper told NBC News that the incident was “almost unprecedented” in the city of around 100,000.

“The crime scene has taken a pretty heavy toll on officers who have come out here”, he added. “Especially when the victims are juveniles”.