If the writ is issued by the court when sitting for the transaction of business, it shall be signed, by hand or electronically, by the clerk, otherwise by the magistrate issuing it, and may be served in any county by any sheriff or deputy sheriff.
Mass. Gen. Laws ch. 248, § 6
Signature of magistrate or clerk; service
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.