The Employment and Social Development Canada investigation alleges there were violations of the code relating to the force's equipment, training and supervision in the June 4 case that terrorized the New Brunswick city.
Justin Bourque murdered constables Doug Larche, Fabrice Gevaudan and Dave Ross, and constables Eric Dubois and Darlene Goguen were wounded in the young man's rampage through the city's north end.
Bourque was sentenced to life in prison with no eligibility for parole for 75 years in October after pleading guilty to three counts of first-degree murder and two counts of attempted murder.
An RCMP review of the shootings said officers responding to the shootings faced a litany of problems that included communicating accurate information, accessing high-powered weaponry and securing protective equipment.
Bourque used a semi-automatic rifle to shoot the five officers in the city, and set off a 30-hour manhunt that drew in officers from around the region.
Commissioner Bob Paulson says the police force is considering the substance of the labour code charges and reviewing what actions it will take.
"The safety of our employees in doing this dangerous job, protecting the public, is always our priority," he said in the news release.
"As our honour roll sadly confirms, there has always been — and sadly always will continue to be — deadly threats to officers."
He says further comment is inappropriate as the matter is before the courts.
A spokesman for Public Safety Minister Steven Blaney said in an email that the department is pleased the RCMP is acting on a series of recommendations made in the review completed by former assistant commissioner Alphonse MacNeil into the shooting.
"Our government has full confidence in the RCMP to enforce the laws of Canada and keep Canadians safe," wrote Jeremy Laurin, Blaney's press secretary.
— Story by Michael Tutton in Halifax.
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