There was a heavy law enforcement presence Monday morning at Devil's Den State Park, but otherwise the park was mostly empty as authorities continued their investigation into a suspected double homicide that occurred at the park over the weekend.

Arkansas State Police investigate a double homicide after two bodies were found along a trail at Devil’s Den State Park.

The manhunt for a suspect has entered its third day after a couple was killed while hiking at Devil's Den State Park in Arkansas. Chris Swecker, former FBI assistant director, tells "Elizabeth Vargas" the remote nature of the crime's location makes it "perfect for predators" to commit such awful offenses.