The mother of a University of Windsor student who was killed during a knife fight describes him as "such a sweet boy" who wanted to be a probation officer.

Windsor police on Tuesday laid a murder charge in the death of 19-year-old university student Kevin Kugathasan.

He was stabbed to death on Pelissier Street early Saturday morning during a fight between two groups of men.

Dwayne Nicholas Pierce, 22, is charged with first-degree murder

A police sergeant broke the news to Kugathasan's mother, Pricilla Kugathasan.

"I never expected this," Pricilla Kugathasan told CBC News from her Scarborough home. "He never gets angry with anybody whatsoever.

He's such a sweet boy and I can't even explain how nice he is to everyone one. From the oldest people to youngest people, he always had the respect for everyone."

Kevin Kugathasan died in what Windsor Police Chief Al Frederick called one of the most violent and chaotic brawls he's seen during his 29 years as a police officer.

Six people were stabbed. Two were hospitalized. Kevin Kugathasan died. And three people face charges.

The investigation continues but police say witnesses and combatants are uncooperative.

Police say the two groups of men knew each other.

Kevin Kugathasan didn't have a criminal past.

His mother said friends were very important to him and that she knew all of his friends back home in Scarborough. She said she liked them all.

He had two roommates in Windsor.  Pricilla Kugathasan met them but says she didn't really know them well.

Kevin Kugathasan was a second-year student at University Windsor, where he was studying criminology.

"He wants to be a probation officer, he wants to know what's going on, he wants to go and talk to the criminals," Pricilla Kugathasan said. "This is what he used to tell me, 'ma, I want to see why, why this is happening, why why, what is in their mind?'"

Pricilla Kugathasan said making the person pay for killing her son won't change anything.

"I lost my son, so doing that to the other guy, it's not going to bring back my son," Pricilla Kugathasan said. "Let the person learn the lesson. Let God take care of them.

"I'm not interested in catching that person and doing something to him. That's not me. I already told the officer, too, if you guys want to do something, do it on your own. I'm not interested in punishing the other guy whatsoever."

Kevin Kugathasan 's funeral will be held in Toronto on Saturday at 9 a.m.

"Kevin ... he's not supposed to be dying in this way. He don't deserve this kind of death," Pricilla Kugathasan said. "But it is unfortunate that it happened to Kevin and I hope nobody should get this kind of [news] as a mother. None of the other mothers should be going through pain like this."