The Supreme Court grappled Wednesday with an appeal from an Oklahoma death row inmate who even the state’s conservative attorney general believes should not be executed, with some justices signaling a willingness to let state courts further review allegations that prosecutors withheld evidence in the case.

Glossip, now 61, was convicted of commissioning the murder of Barry Van Treese, owner of the Best Budget Inn motel in Oklahoma City where Glossip was a manager. All parties agree

At oral arguments Justices Clarence Thomas and Samuel Alito appeared indifferent to the state AG’s insistence that Glossip’s conviction is unconstitutional.