10/27/2014 02:19 EDT | Updated 12/27/2014 05:59 EST

CSIS bill to be tabled today would beef up spy agency powers

The federal government will table a bill in the House today to expand the powers of the Canadian Security Intelligence Service (CSIS), Canada's spy agency.

Public Safety Minister Steven Blaney had been expected to introduce the legislation last week before a gunman launched an attack in the capital.

The bill is expected to be tabled following today's question period around 3 p.m. ET.

The proposed legislation has not been altered following Wednesday's assault on the National War Memorial and Parliament's Centre Block, CBC News has learned.

Sources tell CBC the bill is expected to amend the Canadian Security Intelligence Service Act to:

- Give CSIS more powers of surveillance and detention.

- Give Canada's spy agency explicit authority to share information on suspected Canadian terrorists abroad with members of the so-called "Five Eyes" group of countries — namely the U.S., U.K., Australia and New Zealand.

- Allow the use of evidence gleaned from confidential sources without having to identify them in court proceedings, even to the judge.

The ultimate goal of the bill is to give authorities greater power to deal with some of the Canadians already on a watch list who are considered most dangerous, sources say.