CTV News has obtained evidence that shows initiation rituals at the Delta Kappa Epsilon house earlier this year, where those vying to get into the house were swarmed, yelled at, called names and threatened with violence.

A source says the footage was secretly taken during a four-day hazing event in January 2010. Pledges can be seen eating raw onions and being approached with paddles.

According to the University of Alberta's student newspaper, other more severe abuses included sleep deprivation, time spent in confined spaces and forcing students to eat their own vomit.

An alumnus who asked to remain anonymous says in years past extreme dehydration was also part of the test, with prospective members denied water, forced to down Kool-Aid with salt, and encouraged to drink excessively. He says this became particularly challenging because part of the hazing included physical tests like wind sprints and push-ups.

Parents who took part in the University's open house on Saturday say they are disturbed by the allegations.

"I'm appalled that this would happen here or anywhere," said one mother.

"It's degrading and it's demeaning."

One father says while the alleged hazing won't be the deciding factor on whether he'll encourage his son to enroll at the school, the accusations are enough for him to question the merit of fraternities.

"Vomit eating and that is ridiculous, spanking people and all that - just wouldn't be allowed for me," said Walter Lopata.

His son agrees.

"Boys will be boys you know, but you've got to watch it. You can't do anything wrong, like if it's going to kill the guy or that sort of thing," said Michael Lopata.

Members of the Delta Kappa Epsilon fraternity have repeatedly refused to speak about this issue and calls to their international headquarters have not been returned.

A release sent out by the organization, however, says hazing is against the rules and assures officials are investigating the allegations.

University officials confirm they are also looking into the matter. They say if the accusations are proven, students involved in the initiation could face consequences ranging from a letter of reprimand to expulsion.

Any potential hazing victims or anyone involved in hazing activities are encouraged to contact the Dean of Students, campus security or the Interfraternity Council.

With Files from Sean Amato