Louisiana’s Supreme Court is considering whether recent U.S. Supreme Court rulings about juveniles convicted of murder mean a juvenile robber’s 99-year sentence is unconstitutional.

Alden Morgan is now 35. He was 17 years old when he held up a couple with their baby daughter.

The New Orleans Advocate reports that several justices noted that his punishment is much higher than the nation’s highest court would have allowed for second-degree murder.

The U.S. Supreme Court has found it unconstitutional to execute juveniles, to give them life sentences for most crimes, and — except in rare cases — to deny them a chance at parole for most killings.

Morgan’s case appears to be the first time that Louisiana’s high court has considered how those rulings may affect sentences for lesser offenses.