Two US teens arrested after five found dead in Oklahoma house

Two teenagers have been arrested in Oklahoma after five people were found dead at a house last night, according to police.

Police were called to an address in Broken Arrow suburb of Tulsa at about 11.30pm local time.

Sgt Thomas Cooper said that when officers arrived, they found a child who was still alive but in a critical condition, with another child unharmed.

A 16-year-old and an 18-year-old, who are both related to the victims, were arrested a short distance from the scene.

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

"This is a relatively safe community, smaller than Tulsa and what you might call a bedroom community," Cooper said.

"The crime scene has taken a pretty heavy toll on officers who have come out here," he added. "It hits close to home, especially when the victims are adults and juveniles. Our officers have a lot to take in."