DNA helped authorities identify a severed head found on a New Jersey golf course in 1989 as a New York City woman who may have been murdered by a serial killer.
The skull has been confirmed as belonging to 25-year-old Heidi Balch.
Authorities believe Balch, who worked as a prostitute, was killed and dismembered by Joel Rifkin, who is serving more than 200 years in a New York prison for nine murders.
He claimed he killed 17 prostitutes and his first victim went by a name that Balch used.
"He obviously did it. There's no doubt." former Hopewell Detective Bruce Carnall, who lead the case from 1989 until 2005, told The Times of Trenton.
Authorities used the alias to track down relatives, which led to the DNA match.
Hopewell Police Chief George Meyer told the Times New York authorities have no interest in prosecuting the case because Rifkin is already behind bars.