OTTAWA -- The Conservative government will amend its anti-terrorism bill to make it clear that new information-sharing provisions would not target protesters who act outside the letter of the law.

Sources familiar with the planned changes say the government will also ensure the new information sharing stops short of exchanges "with any person, for any purpose."

Another change would limit the public safety minister's powers to order an air carrier to prevent someone from committing a terrorist act.

In addition, a new clause would make it clear that Canadian Security Intelligence Service officers do not have arrest powers.

The sources revealed the changes on condition of anonymity because they were not authorized to discuss them publicly.

The Conservatives brought in the 62-page security bill following the murders of two Canadian soldiers just days apart last October.