Mass. Gen. Laws ch. 12 § 34 : ADMINISTRATION OF THE GOVERNMENT — EXECUTIVE AND ADMINISTRATIVE OFFICERS OF THE COMMONWEALTH — DEPARTMENT OF THE ATTORNEY GENERAL, AND THE DISTRICT ATTORNEYS — Pre-arraignment diversion program

The district attorneys shall, within their respective districts, establish a pre-arraignment diversion program which may be used to divert a veteran or person who is in active service in the armed forces, a person with a substance use disorder or a person with mental illness if such veteran or person is charged with an offense or offenses against the commonwealth.