FBI joins manhunt
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Arkansas police said the killer of a couple who were hiking at Devil's Den State Park likely sustained injuries in the attack and released a sketch of a person of interest wanted for questioning.
The manhunt for the suspect who killed a married couple while hiking in an Arkansas state park continues. NBC News' Aaron Gilchrist reports on the authorities' progress to catch the killer.
Two people have been found dead on a popular running trail and a manhunt is underway. On Saturday, July 26, two people were found dead on a popular running trail at Devil's Den State Park in West Fork,