Commonwealth v. Chamberlin, 12 N.E.3d 954

Chamberlin was convicted in Superior Court of armed robbery while masked, kidnapping for extortion, and armed assault with intent to murder after a plan to rob a Fall River real estate office.
The crime involved telephone conversations between Chamberlin and the office owner, culminating in an evening appointment at the office.
Voicemail, call records, and a number linked to Chamberlin were used to connect him to the crime; police obtained phone records via voluntary production from the carrier.
T-Mobile voluntarily produced the defendant’s phone records without an administrative § 17B subpoena; a grand jury subpoena followed later but was not in evidence.
The defense moved to suppress, asserting violations of G. L. c. 271, § 17B and related procedures, plus suppression challenges to search-warrant execution.
Issues included the admissibility of voice identifications and whether additional evidentiary procedures (reappraisal, plain view, and no-knock considerations) affected the outcome.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether a § 17B subpoena was required for phone records	Chamberlin argues mandatory § 17B process was violated.	Chamberlin contends the records were improperly obtained under § 17B.	Voluntary production without § 17B subpoena upheld; not a constitutional violation.
Whether voluntary phone-record disclosure complied with the Stored Communications Act	Exigent-circumstances justification insufficient to excuse absence of formal process.	Exigency supported by violent crime and ongoing threat justified disclosure.	Exigent circumstances supported voluntary disclosure; suppression not required.
Whether the grand jury subpoena was procedurally improper	Grand jury subpoena issuance after records were produced breached procedure.	No prejudice shown from the improper subpoena.	Improper but not prejudicial; suppression not warranted.
Whether a reappraisal was required for the no-knock entry	Reappraisal was mandatory to justify no-knock entry.	No universal requirement of reappraisal; circumstances justified entry.	No formal reappraisal required given ongoing danger and evidence preservation needs.
Whether the plain view seizure, including the computer and listings, was lawful	Inadvertence requirement not satisfied for the seized items.	Probable cause or anticipation of items present could undermine inadvertence.	Inadvertence not negated; evidence admissible as plain view with other corroborating evidence.

Commonwealth v. Boe, 456 Mass. 337 (2010) (statutory interpretation of § 17B)
Commonwealth v. Augustine, 467 Mass. 230 (2014) (Stored Communications Act interpretation; exigent-disclosure context)
Commonwealth v. Balicki, 436 Mass. 1 (2002) (plain view inadvertence principle; likelihood of general anticipations)
Commonwealth v. Scalise, 387 Mass. 413 (1982) (no-knock and continuing necessity; reappraisal concept)
Commonwealth v. Jimenez, 438 Mass. 213 (2002) (flexible approach to no-knock scenarios; reappraisal relevance)
Commonwealth v. Mitchell, 444 Mass. 786 (2005) (ethics and procedure regarding subpoenas and records)
Commonwealth v. Smallwood, 379 Mass. 878 (1980) (prejudice analysis for improper grand jury subpoena)
Commonwealth v. Cote, 407 Mass. 827 (1990) (due process and exclusionary considerations in evidence)
Commonwealth v. Leaster, 395 Mass. 96 (1985) (identify reliability and memory in eyewitness contexts)
Commonwealth v. Mezzanotti, 26 Mass. App. Ct. 522 (1988) (voice identification admissibility standards)