Gunman kills at least 16 in Nova Scotia in Canada's worst mass shooting

Royal Canadian Mounted Police (RCMP) monitor the TransCanada Highway while searching for Gabriel Wortman, who they describe as a shooter of multiple victims, near Fort Lawrence, Nova Scotia, Canada April 19, 2020. REUTERS/John Morris

PORTAPIQUE, Nova Scotia (Reuters) - A gunman who at one point masqueraded as a policeman killed at least 16 people in the Canadian province of Nova Scotia during a 12-hour rampage, authorities said on Sunday, in what was the country's worst modern-era mass shooting.

Among the victims of the shooting spree that spread across part of the Atlantic Canadian province was RCMP officer Heidi Stevenson, a 23-year veteran of the force with two children.