Massachusetts Motion for Post-Conviction Relief is a legal document that allows individuals who have been convicted of a crime in Massachusetts to request relief from their conviction or sentence. This motion is typically filed when new evidence is discovered, or when there is a claim of constitutional rights violation during the trial process. Some common types of Massachusetts Motion for Post-Conviction Relief include: 1. Motion for New Trial: This type of motion is filed when new evidence emerges after the trial that could potentially change the outcome or raise doubts about the defendant's guilt. The new evidence must be substantial and not simply cumulative to what was presented during the trial. 2. Motion to Vacate Judgment: This motion is filed to challenge the validity of the conviction based on constitutional violations during the trial. Common grounds for this motion include ineffective assistance of counsel, prosecutorial misconduct, or newly discovered evidence of constitutional violations. 3. Motion to Correct an Illegal Sentence: This motion is filed when there are errors or illegalities in the sentence imposed by the court. It can be based on issues such as incorrect application of sentencing guidelines, inappropriate enhancements, or other sentencing errors. 4. Motion for Habeas Corpus: While not technically a motion for post-conviction relief, a habeas corpus petition can be filed in federal court to challenge a Massachusetts state conviction on the grounds of a violation of federal constitutional rights. This is typically done when all state remedies have been exhausted. It is important to note that filing a Massachusetts Motion for Post-Conviction Relief requires the assistance of an experienced attorney who specializes in criminal defense and post-conviction litigation. The process can be complex and time-sensitive, and it is crucial to identify the appropriate grounds and provide sufficient evidence to support the motion.