GARNET, Mich. (Michigan News Source) – Officials arrested a former Mackinac County woman on Tuesday for the murder of a baby found in a campground outhouse in 1997.

The Mackinac County Sheriff’s Office says officials arrested the woman in Wyoming; she will be extradited to Michigan to face open murder charges.

MORE NEWS: Ottawa County Board of Commissioners Votes to Give Themselves a Hefty Raise

Investigators say the 58-year-old woman told them she was the mother of the child and made additional statements that led them to her arrest.

The investigation began in 1997 when the Mackinac County Sheriff’s Office and Michigan State Police found the remains of an unidentified baby in a vault toilet at the Garnet Lake Campground in Hudson Township.

They called the child “Baby Garnet;” the baby was never identified and the case went cold.