Five people have been found dead at a house in Oklahoma and two teenagers said to be related to them are in custody.
Police were called to an address in Broken Arrow at about 11.30pm local time last night for an unspecified reason.
Sgt Thomas Cooper said that when officers arrived, they found the five deceased victims and a child who was still alive but in a critical condition. Another child was found unharmed.
A 16-year-old and an 18-year-old, who are both related to the victims, were taken into custody.
No further details were available.