Matthew de Grood has been found not criminally responsible (NCR) in the stabbing deaths of five young people, after a judge ruled he had “lost touch with reality” at a 2014 house party in Calgary's Brentwood neighbourhood.

Hear about the horrific bond between two of the most high-profile Canadian killings: the Brentwood Five massacre and the Greyhound bus beheading.

No one could have predicted how the terrifying turn the night would take and how quickly it would all unravel. It was the biggest mass killing in Calgary's history.

The chairwoman of the Alberta Review Board says she has decided to resign after months of what she characterizes as banging her head against a wall.

Doug Schweitzer says he'll ask his department to examine any and all options around the review board process to respect victims.

With prior approval, Matthew de Grood will be able to leave Alberta Hospital in Edmonton unsupervised for outings in the city.

A judge in 2016 found de Grood not criminally responsible for the killings because he was suffering from schizophrenia at the time.

It’s been five years since five young people lost their lives in Calgary's worst massing killing.

Matthew de Grood, now 27, was found not criminally responsible for the 2014 stabbing deaths of Kaiti Perras, Josh Hunter, Zackariah Rathwell, Jordan Segura and Lawrence Hong.

De Grood was suffering from a mental disorder when he attacked and killed Zackariah Rathwell, 21, Jordan Segura, 22, Josh Hunter, 23, Kaitlin Perras, 23, and Lawrence Hong, 27, in April 2014. The judge ruled de Grood didn't understand his actions were wrong.