Canada's annual inflation rate fell to 1.7% in April due to a drop in energy prices, but analysts said a rise in closely watched core measures would make life hard for the Bank of Canada as it ponders its next rate move.

Statistics Canada said gas prices fell 18.1 per cent year-over-year in April, thanks mostly to the end of the carbon price, but also because global oil prices fell amid declining demand and higher production from OPEC countries. Natural gas prices also fell 14.1 per cent annually in the month.