Massachusetts Criminal Procedure Rule 29: Revision of Revocation of Sentence
(Applicable to District Court and Superior Court)
(a) Revision or Revocation. The trial judge upon his own motion or the written motion of a defendant filed within sixty days after the imposition of a sentence, within sixty days after receipt by the trial court of a rescript issued upon affirmance of the judgment or dismissal of the appeal, or within sixty days after entry of any order or judgment of an appellate court denying review of, or having the effect of upholding, a judgment of conviction, may upon such terms and conditions as he shall order, revise or revoke such sentence if it appears that justice may not have been done.
(b) Affidavits. If a defendant files a motion pursuant to this rule, he shall file and serve and the prosecutor may file and serve affidavits in support of their respective positions. The judge may rule on a motion filed pursuant to this rule on the basis of facts alleged in the affidavits without further hearing.
(c) Notice. The defendant shall serve the prosecutor with a copy of any motion and affidavit filed pursuant to this rule. If the judge orders that a hearing be held on the motion, the court shall give the parties reasonable notice of the time set for the hearing.
(d) Place of Hearing. A motion filed pursuant to this rule may be heard by the trial judge wherever he is then sitting.