Federal authorities have announced the arrest of a New Jersey man in the cold-case slaying of a teenager whose body was found in central Pennsylvania more than two decades ago.

Columbia County authorities said hunters found the frozen, shoeless body of 17-year-old Shamar Washington of Williamsport down an embankment in Hemlock Township in January 2001.

He had been reported missing from Williamsport six days earlier.

An autopsy concluded that he had been beaten, stabbed and shot.

Federal marshals in Scranton said 44-year-old Brian Gregory Quinn was arrested last week in Deptford on a criminal homicide warrant and is awaiting extradition; it's unclear whether he has an attorney.