ROUGH CUT (NO REPORTER NARRATION)

The gunman in Wednesday's attack on Canada's capital acted alone and, despite a criminal record, had no apparent links to a convert to Islam who killed a soldier in Quebec earlier in the week, police said on Thursday.

The gunman, Michael Zehaf-Bibeau, 32, was a Canadian who may also have held Libyan citizenship, said Bob Paulson, commissioner of the Royal Canadian Mounted Police (RCMP).

Zehaf-Bibeau fatally shot a soldier at a national war memorial on Wednesday before racing through the parliament building in the capital Ottawa where he was shot dead.

In the Quebec incident on Monday, Martin Rouleau, 25, rolled over two Canadian soldiers with his car, killing one, before he too was shot dead, police said.

"We have no information linking the two attacks this week," Paulson told reporters in Ottawa, which remained on high security alert.

"Our partners at the Ottawa police service, and at the RCMP agreed that Zehaf-Bibe