Health Minister Terry Lake and Public Safety Minister Mike Morris make the announcement this afternoon in Vancouver.
Peter Schilling, who saw the shooting from his second-floor office on Tuesday afternoon, said he was on the phone with a colleague staring out the window when he saw J. Randall Barrs get out of his car in the driveway of his Yorkville law office.
Const. Matthew MacGillivray, a former police sergeant, was demoted in January after a Halifax Regional Police disciplinary officer found he had used unnecessary force and engaged in discreditable conduct.
Taxpayers forked out $1.1 million to move some four dozen political staffers to Ottawa after Justin Trudeau's Liberals won power last fall.
A man and his common-law wife are dead after what police believe was a targeted, gang-related shooting in Calgary.
Hours before the editor-in-chief of Forbes business magazine spoke to a conference of Quebec financiers in Montreal, Trudeau told the UN General Assembly in New York to reject politicians who exploit people's fears and anxieties.