Niko Arlia, 17, was stabbed during a fight at a north Edmonton party early Sunday morning and later died of his injuries. Niko Arlia, 17, was stabbed during a fight at a north Edmonton party early Sunday morning and later died of his injuries. (CBC)Six Edmonton high school students were suspended Wednesday and could face explusion over threatening comments made towards another student on Facebook about the weekend slaying of a teen.

Niko Arlia, 17, was stabbed early Sunday morning during a fight at a party in a community hall in north Edmonton. His body was found later on the lawn of a nearby home, and the medical examiner determined he died as a result of the stabbing.

A memorial site for Arlia sprung up on Facebook shortly after he was killed.

The suspended students — three males and three females — are in either Grades 11 or 12 at St. Joseph's High School.

They were suspended for five days with a recommendation that they be expelled, according to Lori Nagy, a spokeswoman for Edmonton Catholic Schools.

The comments prompted a warning Wednesday from police, who worried they could lead to retaliation and hamper the police investigation.

"Threats made both in person or over the internet in this particular case can result in charges," Edmonton police Sgt. Kelly Rosnau said. "So, we look at it as a concern, not only for the police, but it should be a concern for the youth and for their parents."

Kevin Moffett, 19, has been charged with second-degree murder and a weapons offence in the case.