463 Mass. 353 - Appellee Commonwealth Brief - Mass Cases

established. Additionally, as can be seen in the
impounded record appendix, CSA's identity and place of
residence were both known to Detective Hyde at the time
he drafted the supporting affidavit. (I.R.A. 6.) See
Welch, 420 Mass. at 651 (reliability. "may be bolstered
by the fact that the police know the informant's
identity and address or telephone number and would be
able to contact him or her"). With respect to the
veracity of the second informant "B" ("CSB"), Detective
Hyde knew this person's identity and residence, (I.R.A.
6,) and that CSB had previously provided information
which had led to an arrest and narcotics prosecution.
(I.R.A. 6.) See Parapar, 404 Mass. at 322.
CSA provided Detective Hyde with very detailed
information, based upon first hand knowledge, about the
defendants' drug activity, (see I.R.A. 6-7), which in
turn was well-corroborated, by similar information
provided by CSB, (see I.R.A. 8), by police observation,
and by CSB's two controlled buys with the defendants,
both within seven days of the application for the
search warrant. (I.R.A. 6-8). See Commonwealth v.
Warren, 418 Mass. 86, 89 (1994).
All of this was sufficient to establish probable
cause. Alfonso A., 438 Mass. at 376; Commonwealth v.
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