Police Capt. Louis Curcione said Tuesday evening that he believed "drug-related people" were involved in the fatal shooting of an 18-year-old Sunday.
Tonio Bennett of 1513 Michigan Ave. was found unconscious in his car, which was parked in a Unity Park project lot.
He was pronounced dead of a small-caliber bullet wound to the head 40 minutes later in Niagara Falls Memorial Medical Center.
Curcione said that Bennett was arrested earlier this year in New York City "regarding some kind of drug transaction."
Police said earlier that the victim was arrested here March 10 on a felony drug-possession charge.