The Commonwealth, pursuant to Mass. R. Crim. P. 15 (b), as amended,
We summarize the affidavit in support of the search warrant. On March 12, 1986, State police Officer Gregory C. Dem, the affiant, had a conversation “with a confidential and reliable informant [informant] who ha[d] previously provided information which led to the March, 1986 arrest of McEverett Peters of Lynn, Ma. on a warrant for distributing Class ‘A’ Heroin.”
The informant reported that the defendant, Marcos A. Rojas, deals large quantities of cocaine from his first-floor apartment at 27 North Federal Street, Lynn, and distributes it to various clients using a “pager” or “beeper.” The informant noted that Rojas constantly monitors a police scanner out of fear of police detection. The informant related that he had seen Rojas in possession of a .357 Magnum pistol, and that Rojas makes cocaine deliveries in a white Toyota automobile with Massachusetts license plate number 553-KCZ.
On March 17, 1986, the informant told the affiant that, while within Rojas’s apartment within the previous twenty-four hours, he had seen Rojas with several plastic bags of cocaine, had observed him using his pager, and had watched him leave the apartment to deliver the cocaine. At this time, according to the informant, Rojas was in possession of a .357 Magnum pistol.
On March 13, 1986, the affiant spoke with a “concerned citizen” (citizen), who wished to remain anonymous out of a *485 fear for safety. 2 The citizen stated that Rojas was distributing cocaine from his first-floor apartment using a page-call system, and that Rojas was in constant possession of a handgun. 3 The citizen stated that she, or he, personally observed plastic bags containing cocaine in the apartment.
On the basis of this affidavit, a clerk of the Lynn District Court issued a warrant on March 18, 1986, to search 27 North Federal Street, Lynn. Officer Dem executed the search on the same day and seized, among other things: “[o]ne plastic bag with white (brick) substance,” “[o]ne tinfoil wrap with white powder,” “[o]ne Ohaus Triple Beam Scale with powder residue,” “[o]ne .357 Magnum pistol,” and “[o]ne Omni Page Beeper.”
Subsequently, the defendant was indicted by a grand jury for trafficking in cocaine and for the unlawful possession of a firearm. Prior to trial, the motion judge ordered the suppression of the evidence on the ground that the affidavit failed to establish probable cause.
Under art. 14 of the Massachusetts Declaration of Rights, a magistrate, before issuing a search warrant, must determine that probable cause exists.
Commonwealth
v.
Upton, supra.
“In
Upton,
we held that, under art. 14 . . . the test for determining probable cause in cases involving unnamed informants incorporates the principles developed under
Spinelli
v.
United States,
We agree with the motion judge that the information in the affidavit regarding the past performance of the informant was not sufficient to satisfy the “veracity prong” of the
Aguilar-Spinelli
test.
4
The only reference to this informant’s veracity was the statement that he previously had provided information which led to the March, 1986, arrest of Peters. A naked assertion that in the past the informant had provided information which led to a prior arrest is insufficient by itself to establish an informant’s veracity. The magistrate must be furnished with more detail regarding the circumstances of the prior arrest in order to make a meaningful determination of the informant’s veracity. The affidavit does not make clear what role the informant played in obtaining the arrest. Nor does it indicate whether any information previously provided to the police by him had been proven correct. See
Commonwealth
v.
Malone,
The Commonwealth mistakenly argues that
Commonwealth
v.
Valdez,
We disagree with the Commonwealth’s assertion that the information contained in the affidavit was sufficiently detailed to be self-verifying. Cf.
Commonwealth
v.
Atchue,
*488
The information given by the citizen also fails to satisfy the veracity prong of the
Aguilar-Spinelli
test. The affidavit contains virtually no information regarding the citizen’s veracity. While “concerned citizens” who report information to the police out of civic duty ordinarily are not subject to the same degree of skepticism as informants,
Commonwealth
v.
Burt,
The Commonwealth argues that the tips given by the informant and the citizen provided mutual corroboration. We disagree. While tips which alone may not satisfy the veracity test nevertheless may establish reliability through cumulative reinforcement,
Commonwealth
v.
Nowells,
The order allowing the motion to suppress is affirmed.
So ordered.
Notes
A single justice of this court granted the Commonwealth’s application and referred the appeal to the Appeals Court. This court took the case on its own motion for direct review.
Since the identity of this “concerned citizen” was not revealed, he (or she) takes the status of an anonymous informant and, thus, does not obtain the enhanced status of credibility given an identified citizen or victim. See
Commonwealth
v.
Atchue,
We note that possession of a handgun is not per se illegal. See
Commonwealth
v.
Nowells,
The informants’ assertions that they personally observed the objects and activity in the apartment appear to be sufficient to satisfy the “basis of knowledge” prong of the
Aguilar-Spinelli
test. See
Commonwealth
v.
Valdez,
The other cases relating to previous arrests cited by the Commonwealth are also distinguishable from the case at bar in that independent police investigation supported the informants’ tips. See
Commonwealth
v.
Saleh, supra
at 411;
Commonwealth
v.
Pellier,
It is instructive to compare the assertions in the present affidavit with those in the affidavit in
Commonwealth
v.
Germain,
