04/16/2014 04:00 EDT | Updated 06/16/2017 11:23 EDT

Calgary Stabbing Case To Be Handled By Outside Prosecutor

A Crown prosecutor will be brought in from outside Calgary to handle the court case involving the city's worst mass murder.

The accused, Matthew de Grood, who is 22, is the son of a senior city police officer.

An Alberta Justice spokeswoman says an Edmonton prosecutor will be assigned to the file to address any perceived conflict in the case.

De Grood faces five counts of first-degree murder.

The victims had been at a house party celebrating the last day of university classes when a suspect walked in, grabbed a knife and started stabbing people.

Police say they are still trying to determine a motive for the attack