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Van der Linden is described by police as Caucasian, 5’7 tall and weighing 160 pounds, with brown hair and hazel eyes.
He is clean shaven and was last seen wearing a dark coloured jacket, white t-shirt, grey pants, a surgical mask and headphones.
Investigators say he does not have access to a vehicle and was last known to be travelling on foot.
Van der Linden enjoys the outdoors and is a yoga enthusiast, according to his family. They say he’s known for his witty banter.
“It goes without saying that anyone close to him is devastated and exceptionally concerned by the news of his disappearance,” they wrote.
Calgary police ask that anyone who may have seen or spoken with Van der Linden before he went missing, or who may have information about his current whereabouts, to call the police service at 403-266-1234, or Crime Stoppers anonymously.