Paulson also noted that former Vancouver resident Michael Zehaf-Bibeau prepared a video of himself before launching his attack at the National War Memorial on October 22.
"The RCMP is conducting a detailed analysis of the video for evidence and intelligence," Paulson stated. "You must understand that we cannot release the video at this time and I would ask for your patience in this regard."
Cpl. Nathan Cirillo was fatally wounded while standing guard over the tomb of the unknown soldier. His funeral is scheduled on Tuesday (October 28).
Zehaf-Bibeau was later shot dead in Centre Block by Parliament's sergeant-at-arms, Kevin Vickers, after the homeless man stormed into the Hall of Honour with a rifle.
"We are still looking into the origin of the gun used by Zehaf-Bibeau," Paulson stated. "It is an old and uncommon gun."
He added that the Mounties suspect that the gunman kept it hidden on his aunt's property in Mont Tremblant along with a knife that he was carrying.
Zehalf-Bibeau had been working in the Alberta oil fields, which provided him with sufficient money to launch the assault.
"The RCMP is also investigating Zehaf-Bibeau’s interactions with numerous individuals in the days leading up to this attack," Paulson stated. "The investigation is focusing on whether these interactions could have contributed or facilitated, in any way, the terrorist attack subsequently committed by Zehaf-Bibeau."