Mass. Gen. Laws ch. 218 § 37
District courts, justices, special justices, clerks, assistant clerks, temporary clerks and temporary assistant clerks thereof may issue summonses and other processes for witnesses in criminal cases, and at all hearings upon applications for complaints wherein a person may be charged with the commission of a crime, and such processes and likewise warrants and other processes in such cases, issued by said courts or persons, may be directed to a court officer or probation officer of the court issuing the process, or either specifically or in general terms to any person in the commonwealth qualified to serve criminal process, and any such process may be served and executed in any part of the commonwealth by the person to whom it is delivered for that purpose. This section shall apply to summonses, warrants and other processes for parties and witnesses in cases of wayward, delinquent or neglected children.
Mass. Gen. Laws ch. 218, § 37