He said that his government was actively seeking information on reports that chemical weapons had been used, while dismissing suggestions the rebels were to blame.
The National Union of Teachers has made several freedom of information requests for reports and data used by the government when determining which free schools to approve.
Canada's Globe and Mail newspaper reports that the Information Commission is investigating seven government departments: Environment, Fisheries and Oceans, Natural Resources, National Defence, the Treasury Board Secretariat, National Research Council of Canada and the Canadian Food Inspection Agency.