Connor Stevenson, 18, stabbed to death in highrise building

The Ottawa police major crimes unit is investigating after teen Connor Stevensonwas stabbed to death in the stairwell of an apartment building on Jasmine Crescent Tuesday evening.

The 18-year-old's mother, Laurie Beaudoin, confirmed the news to CBC Wednesday morning as she was leaving the building at 2020 Jasmine Cres.

"He was the best kid in the world," she said. "He had so many friends."

The teen was a former GloucesterHigh School student. Some members of the high school's rugby team ran by the highrisebuilding Wednesday morning as a tribute to Stevenson.

The high school will be providing grief counsellors forstudents Wednesday, according to an Ottawa-Carleton District School Board official.

"Obviously we're seeking witnesses, looking for anyone that might have any information or heard or seen anything at the time," said Det. Chris Benson.

Police and paramedics respondedat about 5 p.m. to thehighrise apartment buildingafter getting reports that someone had been stabbed.

Paramedics tooktheteen victimto hospital in critical condition,where he succumbed to his injuries.

'He's not coming back, he's actually gone,' friend says

David Lumsden, 19, who lives nearby, said he'dknown Stevenson since Grade 6 and that Stevenson was a laid-back person who "had a lot going for him."

"I didn't sleep last night. I actually didn't sleep last night," Lumsden said Wednesday.

"He's not coming back, he's actually gone. He's not coming out of that hospital. We're going to have to go to his funeral. Nineteen, I'm going to a funeral. His mom, her only child.

"I've got to get out of Jasmine, that's what it makes me think. ... Can't stay here no more. Eighteen? That's too young. I'm 19, so now I'm just blessed. Every day I see on this earth I'm just even more blessed, because this is crazy."

'It's scary'

Stephan Lacoste, whosegrandmother lives in the building,said there's a lot of criminal activity in the neighbourhood.

"It's scary. You never know, right? And so I try to be with my wife at all times when we do come here, especially late at night," he said.

"My grandmother was here, my mother-in-law was here, my son was here too, so that's kind of scary. He was playing at the park maybe around 3, 4, so coming back here and maybe getting in the way wrong place, wrong time that wouldn't be good."

Investigators spent hourscanvassing tenants at the building on Tuesday.

Police are asking anyone who was in the area of the 'C' wing of the apartment building between 5 p.m. and 5:30 p.m. on Tuesday to contact themat 613-236-1222, ext. 5493 orCrime Stoppersat 1-800-222-8477 (TIPS).

The stabbing death isOttawa's second homicide of 2015.