A 19-year-old man shot in Flemingdon Park on Tuesday night is the city's 30th homicide victim.
According to the Toronto Star, the man was convicted earlier this year for his role in the 2006 beating death of teenager Omar Wellington.
Tuesday's incident took place at about 11 p.m. near Vendome Place and Grenoble Drive.
The victim died late Thursday afternoon in hospital of a gunshot wound to the head, Det. Scott Wittemore of the Toronto Police Service's homicide squad told CTV Toronto late Friday.
He said multiple shots were fired in the incident, as many as 10 or 12. However, the victim was the only person known to be wounded by gunfire.
"We're still certainly looking for any witnesses," Wittemore said. "We're not getting a lot of help there."
Investigators are sorting through security video from the scene, he said.
Many people fled the scene, but police don't know which individuals are participants and which ones are spectators, he said.
Anyone with information can call the homicide squad at 416-808-7400 or Crime Stoppers anonymously at 416-222-8477.
During the Wellington trial, which largely ended in February with guilty pleas and sentencings, testimony identified the current murder victim as a member of the Little Rascals street gang.
Testimony indicated Wellington had been stripped, beaten and finally stabbed to death on July 14, 2006 by a group of assailants after failing to buy a gun he had been given $1,500 for.
Tuesday's homicide victim had been charged with first-degree murder in connection with the Wellington case, but pleaded guilty to aggravated assault, as did his brother.
The two, then aged 15 and 16, had served more than two years in pre-trial custody. A judge gave them an additional two years of probation.
Two others also pleaded guilty to assault charges, with the Crown saying there wasn't sufficient forensic evidence to convict on murder charges.
One youth pleaded guilty to first-degree murder and will be sentenced on Monday.
Another youth is awaiting trial on a charge of first-degree murder.
Provisions in the Youth Criminal Justice Act mean these individuals cannot be publicly named.
Anti-gangs announcement
The man's death came as Public Safety Minister Vic Toews visited Toronto to announce funding for an anti-gang program.
Gangs present a "terrible temptation" for youth in Toronto "given the apparent easy access to money and other short-lived notoriety and prestige," Toews said.
He announced $2 million for the GangBusters crime prevention project. The money is expected to go towards providing counsellors, case workers and other resources to youth aged 13 to 17 who are deemed to be at risk of joining gangs.
"We want to achieve results by supporting evidence-based projects, helping people achieve their full potential and to make smart choices," Toews said.
Liberal public safety critic Mark Holland fired back that the program represents an exception to the Tories' tough-on-crime agenda, which has focused on penalties for criminals rather than crime prevention.
"This is a government that's sucking like a vacuum all of the money into prisons, looking to spend literally billions and billions of dollars chasing a failed republican model to build more and more prisons and incarcerate people," he said. "I think this is a one-off to try to provide cover for that kind of action."
With a report from CTV Toronto's Natalie Johnson
