10/27/2014 12:20 EDT | Updated 12/27/2014 05:59 EST

RCMP head Bob Paulson joins CSIS official at Senate security committee

As questions continue to swirl around the attacks on the National War Memorial and Parliament Hill last week, RCMP Commissioner Bob Paulson and Canadian Security Intelligence Service assistant director Michael Peirce are scheduled to testify before the Senate's national security committee.

The joint appearance comes as the committee embarks on a wide-ranging study into security threats facing Canada, which was launched a week before last week's attacks. will have full coverage of today's meeting, which will get underway at 1 p.m. ET. 

Later today, Public Safety Minister Steven Blaney is expected to table a bill that would strengthen CSIS's powers to monitor and track those suspected of plotting terrorist attacks. 

On Sunday, Paulson put out a statement indicating the RCMP has evidence, including a video made by gunman Michael Zehaf-Bibeau, that suggest the attacks in Ottawa were driven by ideological and political motives.