A 911 operator could hear crying and screaming in the background when a call came in from the Tulsa-area home where five people in one family were found stabbed to death.

A narrative of the 911 call from the early minutes of the July 22 attack was released Thursday to reporters after a judge ruled the audio of the call should not be made public.

The narrative indicates police initially believed the call was made by a girl, but now investigators believe a boy placed the call.

Eighteen-year-old Robert Bever and his 16-year-old brother Michael are charged with first-degree murder in the deaths of their parents, two brothers and a sister.

A 13-year-old sister survived the attack, telling officers her brothers were responsible, according to a police affidavit.