Christopher Rosario was 25 and from Dorchester when he was shot and killed in Brockton on April 19, 2014. Around 2:25 a.m. police found him inside a vehicle that had crashed into a fence at the Landerholm Electric Company on Grove Street; he was pronounced dead at the scene. A preliminary investigation says Rosario had been at the Morabeza Nightclub on Main Street that evening. After the club closed he left in a car as the driver, with a passenger.

As they headed east on Grove Street an unidentified vehicle pulled alongside and shots were fired into their car. Struck by gunfire, Rosario lost control and the car crashed; the passenger was unharmed. The Office of the Chief Medical Examiner performed an autopsy and local and state police asked the public for information. No suspects have been publicly identified and no arrests have been announced, and the motive has not been released.

Is there anyone who knew Christopher or who saw activity on Grove Street that night who can help investigators?