“Five University of Calgary students were stabbed to death Tuesday morning in what the city’s police chief called ‘the worst mass murder in Calgary’s history.'” The suspect who’s been arresting the mass-stabbing, Matthew DeGrood is the son of a Calgary police officer. “(Chief Rick) Hanson said de Grood ‘obtained a large knife’ at the house and began attacking his victims shortly after he arrived. ‘He targeted the victims one by one, stabbing them several times’ said Hanson. There was no known altercation between de Grood — who was an invited guest — and any of his victims leading up to the attack, Hanson said.” That’s de Grood’s enigmatic last Facebook post, above. He’s been arrested and charges with five counts of first degree murder.