A new police report says a terror attack on Parliament last October proved to be a "grim reminder that Canada is ill-prepared" to stop terrorist attacks.

The report released Wednesday by Ontario Provincial Police says the Royal Canadian Mounted Police provided "highly inadequate" security on Parliament Hill when Michael Zehaf-Bibeau entered the grounds on Oct. 22, 2014.

Zehaf-Bibeau shot to death Cpl. Nathan Cirillo, who was assigned to the honor guard at Canada's national war memorial. He then stormed Parliament where he was eventually gunned down by the sergeant-at-arms.

RCMP assistant commissioner Gilles Michaud says there were missed opportunities to stop Zehaf Bibeau from entering the building.

The police report says the gunman was not wearing body armor and if he was more organized, the incident could have been worse.