Updated

A detective says a 73-year-old Flint woman admits beating her teenage granddaughter to death with a hammer, then dismembering and scattering the remains 15 years ago.

Genesee County Prosecutor David Leyton has charged Lois Janish with an open count of murder in the death of 14-year-old Coral Hall. The girl disappeared in 1998 and her body has never been found.

Janish was arraigned Thursday in Flint District Court, and Judge Nathaniel Perry III ordered her jailed without bond.

Leyton spokesman John Potbury says the teen went missing after calling a friend asking for a place to stay and saying she'd been fighting with her grandmother.

MLive.com reports that Sgt. Greg Hosmer says Janish apologized for dumping her granddaughter's body. She says she and her now-dead boyfriend dismembered her.