Arkansas police say the killer of a married couple who had been hiking the remote Devil’s Den State Park with their young daughters was likely injured during the weekend attack

Arkansas State Police said Monday they are investigating "any and all tips" in the search for the suspect accused of killing Clinton and Cristen Brink.

A couple who were killed at Devil’s Den State Park on Saturday, July 26, were hiking with their two daughters when they were attacked. The girls, who are 7 and 9, were not injured and are safe with family members.

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.