Police investigate alleged sexual assault involving students at St. Michael's College School

Toronto police say they're investigating an alleged sexual assaultinvolvingstudentsat a Catholic boys' private school, where, according to school officials, some pupils have already been expelled.

St. Michael's College School said Wednesday it "promptly conducted an internal investigation, including meeting individually with the students involved and their parents.

"As a result, swift and decisive disciplinary action has taken place, including expulsions," the school said in a statement.

"The school has zero tolerance for such behaviour."

Local media saystudents have reportedseeing agraphic video of the assault,whichwasshared on social media and later removed.

Investigators said Wednesday they believe a video of the alleged assault is circulating, and warned it qualifies as child pornography.

"The video must be deleted immediately and cannot be shared with anyone,"police spokespersonMeaghanGraysaid in a statement.Police say the investigation is with officers from 13 Division and the Child andYouth Advocacy Centre (CYAC).

The school is known for its athletic program;alumni include hockey greats FrankMahovlich, DaveKeonand Tim Horton.

'Very serious incidents'

Principal Greg Reeves, in a separate email to parents, referred to"two very serious incidents" that occurred on campus and were in violation of the student code of conduct.

Reeves said the administration was informed of them on Monday, and addressed the student body in a formal assembly Wednesday. The school teaches Grades 7 through 12.

"Our concernis first and foremost with the safety and well-being of our students and we are shocked and heartbroken that such incidents have taken place at our school," Reeves wrote to parents.

A follow-up email, from the director of student affairs, said additional support is available for students who need it.

Given police involvement and the privacy of those involved, the school said it will not be making any further comments.

With files from The Canadian Press