A tribute is displayed Monday, April 20, 2020, at the Royal Canadian Mounted Police headquarters in Dartmouth, Nova Scotia, following a weekend shooting rampage by a gunman, disguised as a police officer, that killed multiple people including an RCMP constable. (Andrew Vaughan/The Canadian Press via AP)

The Atlantic Denture Clinic, owned by Gabriel Wortman, is guarded by police in Dartmouth, Nova Scotia, on Monday, April 20, 2020. Wortman, a gunman disguised as a police officer went on a 12-hour rampage in the Canadian province beginning late Saturday, shooting people in their homes, setting fires and killing multiple people, including a policewoman, in the deadliest such attack in the country’s history. (Andrew Vaughan/The Canadian Press via AP)

Royal Canadian Mounted Police officers surround a suspect at a gas station in Enfield, Nova Scotia, Sunday April 19, 2020. Canadian police say multiple people are dead plus the suspect after a shooting rampage across the province of Nova Scotia. It was the deadliest shooting in Canada in 30 years. (Tim Krochak/The Canadian Press via AP)

Investigators check a vehicle at a gas bar in Enfield, N.S. on Sunday, April 19, 2020. A suspect in an active shooter investigation and an RCMP officer are dead after a lengthy police chase in Nova Scotia. A source with knowledge of the matter who was not authorized to speak publicly confirmed the suspect died Sunday at the Enfield, N.S., gas station about 35 kilometers northwest of downtown Halifax. (Andrew Vaughan/The Canadian Press via AP)

Royal Canadian Mounted Police officers prepare to take a suspect at a gas station in Enfield, Nova Scotia, Sunday April 19, 2020. Canadian police say multiple people are dead plus the suspect after a shooting rampage across the province of Nova Scotia. It was the deadliest shooting in Canada in 30 years. (Tim Krochak/The Canadian Press via AP)

Royal Canadian Mounted Police Chief Superintendent Chris Leather fields questions at a news conference at RCMP headquarters in Dartmouth, Nova Scotia, Sunday, April 19, 2020. Canadian police say multiple people are dead plus the suspect after a shooting rampage across the province of Nova Scotia. It was the deadliest shooting in Canada in 30 years. (Andrew Vaughan/The Canadian Press via AP)

Assistant Commissioner Lee Bergerman, commanding officer of the Nova Scotia Royal Canadian Mounted Police, addresses a news conference at RCMP headquarters in Dartmouth, Nova Scotia, Sunday, April 19, 2020. Canadian police say multiple people are dead plus the suspect after a shooting rampage across the province of Nova Scotia. It was the deadliest shooting in Canada in 30 years. (Andrew Vaughan/The Canadian Press via AP)

Prime Minister Justin Trudeau addresses Canadians on the COVID-19 pandemic from Rideau Cottage in Ottawa on Monday, April 20, 2020. (Sean Kilpatrick/The Canadian Press via AP)

Royal Canadian Mounted Police officers surround a suspect at a gas station in Enfield, Nova Scotia on Sunday April 19, 2020. Canadian police say multiple people are dead plus the suspect after a shooting rampage across the province of Nova Scotia. It was the deadliest shooting in Canada in 30 years. (Tim Krochak/The Canadian Press via AP)

This undated photo provided by the Royal Canadian Mounted Police shows Constable Heidi Stevenson, who was killed in a weekend shooting rampage by a gunman disguised as a police officer in the Canadian province of Nova Scotia. (RCMP/The Canadian Press via AP)