Said courts may dispense with the issuing of a warrant if the person charged with a crime has been arrested without a warrant and brought before the court or admitted to bail; but in such case the officer making the arrest shall endorse upon the complaint a statement of his doings.
Mass. Gen. Laws ch. 218, § 34
Arrest without warrant; endorsement of complaint by arresting officer
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.