Commonwealth v. PerryAnnotate this Case
The Supreme Judicial Court held that "tower dumps" are not per se unconstitutional and that investigators may use tower dumps so long as they comply with the warrant requirements of article 14 of the Massachusetts Declaration of Rights.
The Commonwealth obtained search warrants for seven different "tower dumps," a law enforcement tool that provides investigators with the cell site location information for all devices that connected to specific cell towers during a particular time frame, corresponding to the locations of several crimes. Defendant was ultimately charged with six robberies and a homicide. Defendant moved to suppress all evidence obtained from the tower dumps as the fruit of an unconstitutional search. The superior court judge denied the motion. The Supreme Judicial Court reversed in part, holding (1) investigators may use tower dumps so long as they comply with the warrant requirements of article 14; (2) the second of the two warrants in this case was supported by probable cause and therefore did not offend the Massachusetts Declaration of Rights; but (3) the first warrant was not supported by probable cause, and any evidence obtained from it must be suppressed.