Cristofer Perez de la Cruz was 16 when he was shot and killed in Dorchester on the evening of January 10, 2016. Officers responding to a report of a person shot found him near 278 East Street; he was taken to a hospital but did not survive his wounds. He was described as Hispanic.

A Suffolk County grand jury later indicted three men in connection with the killing: 22-year-old Nelson Galvis, 20-year-old Jonathan Pires, and 21-year-old Jessie Williams. Authorities said the incident began as a plan to rob Cristofer of his gold chain, and that the fatal shot was fired during that robbery. Nelson Galvis was identified as the shooter and was convicted of first-degree murder and armed robbery and given life without parole; Pires and Williams were also convicted for their roles.

Anyone who knew Cristofer, saw activity near 278 East Street that night, or has information about the robbery is asked to come forward.