Michigan's attorney general is pledging to challenge court rulings that could lead to parole for prisoners convicted of murders committed when they were under 18.
Bill Schuette says he will appeal the decisions of Ann Arbor federal Judge John Corbett O'Meara, who has ordered the state to start the parole review process for more than 300 inmates.
The judge says the prisoners deserve to benefit from a 2012 U.S. Supreme Court decision that struck down mandatory no-parole sentences for teens. Schuette says the decision shouldn't apply retroactively.
O'Meara last week set a Jan. 31 deadline for the state to give him an update. Schuette says the judge has exceeded his authority.