A man who served with the RCMP in Mayerthorpe is suing the Mounties for the trauma he said he suffered after four of his fellow officers were gunned down near the Alberta town.

Former constable Allen Starman was one of the officers who responded to the murders back in March 2005.

Starman said he witnessed the very close aftermath of the shootings and suffered significant nervous shock and suffering and was medically discharged from the RCMP in 2007.

Starman said he kept working on the investigation, including dealing with the relatives of the dead officers, instead of identifying his health problems,

On Friday, another officer filed a similar lawsuit.

With files from the Canadian Press