TORONTO—A man disguised as a police officer went on a shooting rampage in the Canadian province of Nova Scotia, killing 16 people Sunday, in the deadliest such attack in the country’s history. Officials said the suspected shooter was also dead.

A Royal Canadian Mounted Police (RCMP) officer returns a dog to an individual since the road is shut down after a manhunt for Gabriel Wortman, who they describe as a shooter of multiple victims, in Portapique, Nova Scotia, Canada, on April 19, 2020. John Morris/Reuters
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