The victims had recently moved to Prairie Grove, about 12 miles from the park. A manhunt was underway for a man described as wearing dark clothing and fingerless gloves.

The couple were hiking with their two daughters on Saturday when they were attacked, according to the police, who asked for help in searching for a suspect.

State police identified the victims on Sunday as 43-year-old Clinton David Brink and his 41-year-old wife, Cristen Amanda Brink. In a statement issued on Sunday, the Arkansas State Police said the couple was killed while out hiking with their two daughter, ages 7 and 9, who were not injured in the incident.