The audio of a 911 call made on the day four University of Idaho students were stabbed to death reveals confusion as the callers realized at least one student was not waking up.

The chilling 911 recording from the night four University of Idaho students were knifed to death in their off-campus home was made public this week — revealing the chaotic and terrifying aftermath of the quadruple homicide.

Ahead of Bryan Kohberger’s trial over the murders of four University of Idaho students, a 911 call placed shortly after the killings has been released.