Hernandez, life in prison

Not according to this:

Since two or more jurisdictions may convict a defendant for a single criminal act, sentencing conflicts sometimes arise. For example, the defendant in Heath was executed in Alabama in 1992, although he was first sentenced to life in prison by a Georgia court. Even though Georgia took physical custody of the defendant first, granting it primary jurisdiction and sentencing priority, it likely ceded its primary jurisdiction to Alabama.

I guess Mass has the right to refuse but why would they? Let him go clog up somebody else's prison.