FRAMINGHAM, Mass. (AP) — Framingham police are looking for a person who was said to be wearing a Halloween-type mask when they shot and killed a man sitting in a car outside an apartment complex.

Police responded to the Normandy Arms apartments just before 11 p.m. Wednesday.

There they found 21-year-old Juan Lopez of Framingham in the driver's seat of a car suffering from a gunshot wound. He was taken to the hospital where he was pronounced dead.

A witness told investigators the shooter was wearing a white "Halloween-type mask" and a black sweater.

A mask matching the description was later found in nearby Natick.

No arrests have been made.

Authorities say they do not believe it was a random shooting.