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.

Clinton David Brink, 43, and Cristen Amanda Brink, 41, were killed on a walking trail at Devil's Den State Park in Arkansas.

The married couple who were murdered in front of their daughters while hiking at Devil’s Den State Park in Arkansas died as “heroes protecting their little girls,” according to the victims’ devastated family, as a massive manhunt for the killer continues.

A 43-year-old man and a 41-year-old woman were found dead at Devil's Den State Park in Washington County, according to the Arkansas State Police.