Police say it happened near Albany Avenue at Garden Street in Hartford sometime after 1 p.m.
It happened near the Community Health Center, but the crime scene was about a block long and includes the Food Mart at 550 Albany Avenue.
Police identified the victim as Jason Reddick, 37, of Hartford, CT. He suffered from a single gun shot wound to the chest. Police said he was taken to the hospital where he was pronounced dead.
Police are searching for the suspect or suspects involved.