Canada announced targeted sanctions in February against a Myanmar general who led the army crackdown.
On Wednesday, UN human rights chief Zeid Ra'ad Al Hussein called for a new body tasked with preparing criminal indictments over atrocities committed in Myanmar.
The military says its "clearance operations" in northern Rakhine state are aimed at flushing out Rohingya militants who attacked police posts on August 25.
The UN High Commissioner for Human Rights criticised both Yangon and New Delhi, the latter for seeking to deport Rohingyas who fled to India.
The UN human rights chief condemned he violence and injustice faced by the ethnic Rohingya minority in Myanmar as a textbook example of ethnic cleansing.