Winnipeg police have arrested three men in connection with the stabbing of a student at St. John's High School.
The 16-year-old boy was beaten and stabbed in the upper body in the school's parking lot around 1:45 p.m. Thursday.
He was rushed to hospital in critical condition and is now listed as stable.
Of the three men arrested, an 18-year-old and a 22-year-old are both facing charges of aggravated assault. A 21-year-old is facing charges of uttering threats and possession of a weapon.
Police allege the three of them, as well as a fourth person, went to the school to confront the boy about "a previous matter" and were armed with a knife and baton.
The boy and the three men got into a verbal dispute and the boy was knocked to the ground and assaulted, police said, adding the boy was then stabbed before the attackers ran off.
Police spokesperson Const. Jason Michalyshen said he couldn't offer specifics about the dispute, "but clearly, there's history between our victim and the accused … and these individuals took things to an extreme."
He added that police have had previous contact on other matters with some of the men arrested.
The school was put into a hold-and-secure protocol for a brief time immediately after the incident, meaning external doors were locked but classes continued as normal.
The three men were located just after 2 p.m. at a nearby residence on College Avenue. Police are still looking for the fourth person believed to be involved in the attack.