Toronto's chief of police has authorized a $50,000 reward for evidence leading to the arrest and conviction of the person or persons responsible for a 2012 shooting death.

Leonard Charles Fullerton, 26, was fatally shot in the Weston Road and Eglinton Avenue area on Oct. 30, 2012.

Police believe Fullerton, also known as 'Chris' or 'Curlz', had been arguing with an unidentified suspect when he turned and began to walk away. The suspect then pulled out a gun and fired five shots at the father of two before fleeing eastbound on Denarda Street, according to investigators.

Fullerton suffered a gunshot wound to the head and died of his injuries in hospital.

"This was a public execution of a human being who was gunned down on a street corner in the presence of innocent civilians and adjacent to an occupied child's daycare centre," Homicide Det. Leslie Dunkley said at a news conference Thursday. Toronto police are also appealing to witnesses to come forward with any information.

"It's in the interest of public safety that this individual and any co-conspirators be brought to justice."

Police believe there could be at least 10 civilian witnesses who have not come forward, but have crucial information about the shooting and knowledge of the shooter's identity, Dunkley said.

"I believe that the killer is a person known in the community, and is a person that frequents that community."

"He didn't deserve to die like this," Fullerton's aunt Marvia Creary said at the news conference. "If it's mistaken identity, whatever the situation is, whoever knows something please come forward, because we need satisfaction."

The victim's father, Leaford Fullerton, also appealed to the public: "It's very painful for me to lose my only son… Report this incident, this person to the police. You must realize that it could be your son, and the feelings that I'm getting, it's unbearable."

Police describe the suspect as a six-foot tall black man with a light complexion and thin build.

At the time, a witness saw a man matching the suspect's description getting into a small, silver, four-door car nearby. Police said the car is likely either a Honda or a Nissan.

A vehicle of the same description was captured on dashboard camera footage recorded by a police cruiser rushing to the scene of the shooting. Police released surveillance video, but no arrests have been made.

Anyone with more information is asked to contact Det. Leslie Dunkley of the Toronto Police Homicide Squad directly at 416-808-7400, ext. 7424, or CrimeStoppers at 1-800-222-TIPS.