After three police officers in Canada were killed over the past two weeks, a criminology expert says the number of on-duty cop fatalities this year remains within historical levels, with data showing that policing is generally safer now than in previous decades.

Montreal police officer Mohamed Lamine Benredouane, 34, was shot dead on Monday after responding to a 911 call about a shooter at a hotel in the city’s Côte-des-Neiges district. A civilian was also killed, as was the suspect. A second police officer was injured.