Alberta Floods

Matthew Douglas de Grood, of Calgary, is shown in this image from a Calgary 10k race in 2013. Calgary police say the son of one of their own is a suspect in the worst mass murder in the city's history, a bloody and baffling attack on a group of university students at a house party. THE CANADIAN PRESS

Son of senior police officer charged in Calgary's worst mass murder

Five young people were celebrating the last day of classes at the University of Calgary when they were stabbed to death early Tuesday. A suspect was arrested a short time later after he was tracked down and bitten by a police dog. Police Chief Rick Hanson told reporters that he spoke with the suspect's father, a 33-year veteran with the force, and the officer and his wife are heart-broken. Late Tu…

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