Police in Arkansas were searching for a suspect in the deaths of a couple who investigators said were attacked while hiking with their two daughters.

Arkansas state police are investigating a double homicide in Devil’s Den State Park and looking for the suspect who is still at large. A 43-year-old man and a 41-year-old woman were found dead on a walking trail about 2:40 p.m. on July 26, state police said. The case is being investigated as a pair of suspected homicides.