Mass. Gen. Laws ch. 276 § 2
Search warrants shall designate and describe the building, house, place, vessel or vehicle to be searched and shall particularly describe the property or articles to be searched for. They shall be substantially in the form prescribed in section two A of this chapter and shall be directed to the sheriff or his deputy or to a constable or police officer, commanding him to search in the daytime, or if the warrant so directs, in the nighttime, the building, house, place, vessel or vehicle where the property or articles for which he is required to search are believed to be concealed, and to bring such property or articles when found, and the persons in whose possession they are found, before a court having jurisdiction.
Mass. Gen. Laws ch. 276, § 2