"It's unusual for this year," Toronto Police Homicide Unit Staff Insp. Gregory McLean told CBC News.
Last year, 43 people were slain in the city by mid-September. This year, that number is 37 homicides, eight of which occurred over the past two weeks.
Apartment building shooting
Most recently, a man in his 20s was found dead Wednesday evening in a North York apartment stairwell after an apparent shooting.
Two residents of the apartment building told CBC News they found the incident "unusual."
"I've been here for a while now and nothing of this sort has happened," said a man, who has lived in the building for three years.
A woman, who lives in the building near the Sentinel Road and Finch Avenue West intersection with her young children, said she finds it a "safe" place to raise her family.
The police investigation into the shooting is still in its preliminary stages, said McLean.
4/8 murders solved
However, police have solved four of the most recent eight homicides, he pointed out.
Officers arrested a man on Sunday shortly after a fatal stabbing at the Don Mills Road and Van Horne Avenue area.
Zhebin Cong, 43, is charged with first-degree murder in the killing of San Tai Yuan, 56.
McLean said the homicide squad is generally able to solve the city's killings fairly quickly. They had a roughly 75 per cent case clearance rate from 2011-13.
He thinks their success rate may have helped to deter people from committing crimes, citing the year's overall low murder rate.
Medical intervention also plays a key role, he said, explaining that emergency first aid is saving more people now than a decade ago.
"We have to hand it to our emergency responders," he said. "They get to the scenes. They're getting there fast ... And a lot of people are surviving."
As for the recent spike, McLean said "there's no rhyme or reason to it."
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