Massachusetts General Laws Part IV. Crimes, Punishments and Proceedings in Criminal Cases (Ch. 263-280) Ch. 279, § 3A

Not later than seven days after a plea of guilty or after a verdict of guilty and in any event before adjournment of the sitting at which such plea or verdict has been taken and recorded in a case of felony wherein no question of law has been reported for decision by the supreme judicial court, the district attorney shall move for sentence; provided, that nothing herein shall preclude the district attorney from again making such a motion in any case where the imposition of sentence is delayed under section forty-seven.