Although hearsay may be the basis for a warrant (Jones v. United States 362 U. S. 257, 271) the “magistrate must be informed of some of the underlying circumstances from which the informant . . . [drew his conclusions], and some of the underlying circumstances from which the officer concluded that the informant, whose identity need not be disclosed . . . was ‘credible’ or his information ‘reliable.’” Aguilar v. Texas, 378 U. S. 108, 114. Commonwealth v. Monosson, 351 Mass. 327, 329.
The affidavit here was sufficient to support the issuance of the warrant. The affidavit sets out the “underlying circumstances” from which the informant drew his conclusions. The defendant, however, maintains that the affidavit does not show the credibility of the informant or the reliability of his information. It is true that the characterization of the informer as being “very reliable” does not satisfy the requirements laid down in the Aguilar case or in our decisions. Commonwealth v. Maneatis, 350 Mass. 780. Commonwealth v. Monosson, 351 Mass. 327, 329. But the statements in the affidavit concerning the observations of the police officers were sufficient to establish the credibility of the informant and the reliability of the information he gave the officers. Commonwealth v. Cuddy, 353 Mass. 305, 308-309. Compare Commonwealth v. Rossetti, 349 Mass. 626, 632, where the court pointed out that the affidavit did not indicate that Rossetti had been under police surveillance.
2. The second ground set forth in the motions to suppress is that the warrant does not sufficiently describe the place to be searched. Under G. L. c. 276, § 2, a search warrant “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.” This requirement is similar to the command of the Fourth Amendment that “no warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place