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This is a photo of the suspect in the mass homicide from overnight. The son of a CPS officer #yychttp://t.co/uHxfL5feiC —

Nancy Hixt (@NancyHixt) April 15, 2014

Police say five people were killed in a stabbing rampage at a house party in a quiet neighbourhood northwest Calgary overnight and the arrested suspect Matthew de Grood, 22, is the son of a senior Calgary police. Degrood has been charged with five counts of first-degree murder.

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The victims are four men and one woman, all between 22 and 27 years old. The victims’ families are still being notified and their names have not been released.

“This is the worst mass murder in Calgary’s history,” Calgary Police Chief Rick Hanson said Tuesday.

The arrested suspect has been identifiedas a University of Calgary student. His father is Inspector Douglas de Grood, a Calgary police officer with more than 30 years of experience.

A Facebook page believed to belong to the suspect posted an ominous status update not long before the attack Monday.

“Dread and the fugitive mind- the world needs a hero,” the update, posted at Monday at 7:39 p.m said. The quote is the name of a song from metal band Megadeth’s 2001 album, The World Needs a Hero.

The Facebook page says De Grood was accepted into the University of Calgary law school for fall 2014.