ANN ARBOR, Mich. -

A federal judge has upheld his earlier ruling overturning Michigan's use of a life prison sentence without parole for juveniles.

U.S. District Judge John Corbett O'Meara in Ann Arbor ruled Jan. 30 that Michigan must allow the possibility of parole for those convicted of first-degree murder before they turn 18. State law has an automatic life without parole sentence for first-degree murder.

The decision followed a U.S. Supreme Court decision in 2012 that banned no-parole sentences for juveniles.

The state attorney general's office asked that the decision apply only to the juvenile convict who brought the complaint.

But O'Meara ruled Monday that "every person convicted of first-degree murder in the state of Michigan as a juvenile and who was sentenced to life in prison shall be eligible for parole."