Commonwealth v. Pytou Heang

A jury in the Superior Court convicted the defendant on two indictments charging murder in the first degree on theories of deliberate premeditation and felony-murder for the shooting deaths of Amy Dumas and Robert Finnerty. The defendant was also convicted of armed home invasion and unlawfully carrying a firearm. On appeal, the defendant argues that he should be granted a new trial because the trial judge erred by improperly admitting in evidence: (1) expert forensic ballistics testimony identifying a particular firearm as the one used in the shootings; (2) expert testimony regarding gunshot…