Winnipeg police have charged a teenage suspect with second-degree murder in connection with the fatal stabbing outside of Kelvin High School on Tuesday. Brett Bourne, 17, died.

Police released his name with consent from the family on Wednesday.

Officers said emergency crews responded around 12:30 p.m. Tuesday to the Kingsway and Stafford Street area.

Students said teachers and other students had carried out CPR on the victim.

Bourne was then rushed to hospital by emergency crews, but died from injuries.

Witnesses say as many as three people were taken away in handcuffs.

Police said a minor altercation initially took place on the grounds of Kelvin High School between a 16- year-old boy and the victim.

The 16-year-old boy attempted to leave, according to police. They believe that teenage boy went back in the school.

It was then that a third teen intervened.

Police said the17-year-old suspect and the victim had ongoing issues.

"It does appear that there have been some ongoing relationship issues and that does appear to be one of the main reasons why things escalated to the extent that they did," said  Const. Jason Michalyshen.

He said he could not be more specific, but when asked if there had been a dispute over a girl, Michalyshen said it was "a possibility."

Schools in the area were temporarily in lockdown Tuesday, but that was later lifted.

The school division said clinical support services were on hand to support staff and students.

Michalyshen said officers found the suspect standing around with other witnesses after the stabbing.

"We've said it before: witnesses can certainly turn into suspects," said Michalyshen.

“Clearly an individual, based on the information we have right now, made a very extreme decision,” he said.

The school division also spoke on security Wednesday.

“We have security measures in place at all of our high schools. We have cameras and we have turned that footage over to (Winnipeg police),” said Mark Wasyliw, trustee with the Winnipeg School Division.

The school division is also doing an internal investigation.

An autopsy has been scheduled on the victim.

Anyone with information in the case who has not already spoken to police can call investigators at 204-986-6508 or Crime Stoppers at 204-786-8477.

- with reports from CTV's Cheryl Holmes, Jeff Keele and files from The Canadian Press