Investigators said they believe that the hair was transferred to Stevie Branch, 8, through living with his stepfather, Terry Hobbs. The bodies of the three boys were found naked, bound and submerged in a ditch in a wooded area in West Memphis, Tenn.
"I have nothing to hide," Hobbs told The Memphis Commercial Appeal. "I still didn't have nothing to do with them boys dying."
West Memphis Assistant Police Chief Mike Allen said that Hobbs has never been a suspect.
Evidence from the crime scene has been extensively tested in the last two years. Lawyers for the three men convicted of the crime, who were teenagers in 1993, argue that they should be released because their DNA hasn't been found.
One of the three was sentenced to death and the others to life in prison.