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.

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.

Police are searching for a killer after a husband and wife were murdered while hiking with their young daughters at a remote state park in Arkansas.