OCALA, Fla. (AP) — Florida authorities have solved a 25-year-old missing person case after a convicted inmate admitted to murdering the North Florida woman.

Sherry Yon Petersen was reported missing by her daughter after she failed to show up for dinner on Christmas Day and could not be reached. Petersen, who was 42 years old in 1992, has never been found.

A call this summer from Petersen's sister prompted the Marion County Sheriff's Office to interview Frank Crow. Crow is currently serving a 30-year-old sentence for the murder of his roommate. In a Facebook post, the sheriff's office said he made incriminating statements during the interview but refused to divulge any further details unless he was granted immunity from prosecution.

After discussing the case with prosecutors and Petersen's family, Crow was granted immunity and he confessed to the murder.