A suspected gunman who dressed as a policeman killed several people, including a police officer, in a 12-hour-rampage in Nova Scotia, Canadian media reports.
The attacker was captured by police on Sunday in the rural town of Portapique.
Residents had been advised to lock themselves indoors before the man was arrested following the attack.
Police said the suspect was driving what appeared to be a police car before changing to another vehicle.
Canadian Prime Minister Justin Trudeau described it as “a terrible situation” and Nova Scotia Premier Stephen McNeil told reporters “this is one of the most senseless acts of violence in our province’s history.”
Police say they were first alerted to an incident involving firearms late on Saturday.
Tweets by Nova Scotia police identified the alleged attacker as 51-year-old Gabriel Wortman.
He was not employed by the Royal Canadian Mounted Police but “may be wearing a RCMP uniform”, they said.
“There’s one difference between his car and our Royal Canadian Mounted Police vehicles: the car # [registration plate]. The suspect’s car is 28B11, behind rear passenger window. If you see 28B11 call 911 immediately,” they tweeted on Sunday.
The gunman later changed cars to drive a “small silver Chevrolet SUV”, police added.
He was apprehended Sunday morning.
Mass shootings are relatively rare in Canada where gun ownership laws are stricter than in the neighbouring United States.
In 2019 two fugitive teenagers confessed to killing three people, including an Australian-US couple on holiday, in northern British Columbia.