A judge vacated Frank Sterling's conviction on Wednesday after prosecutors in Rochester, New York, agreed with Innocence Project lawyers that DNA from 74-year-old Viola Manville's clothing excluded him as her killer.

The DNA evidence led instead to prison inmate Mark Christie. Christie strangled a 4-year-old girl in 1994, and prosecutors say he has now confessed to killing Manville.

The 46-year-old Sterling was serving 25 years to life. He confessed to the killing during an all-night interrogation in 1991, but later recanted.