Myanmar leader Aung San Suu Kyi, facing outrage over ethnic violence that has forced about 370,000 Rohingya Muslims to flee to Bangladesh, will not attend the upcoming U.N. General Assembly because of the crisis, her office said on Wednesday.

The exodus of refugees, sparked by security forces' fierce response to a series of Rohingya militant attacks, is the biggest problem Suu Kyi has faced since becoming leader last year. Critics have called for her to be stripped of her Nobel Peace Prize for failing to do more to halt the strife.

Myanmar's military, which ruled with an iron fist for almost 50 years until it began a transition to democracy in 2011, retains important political powers and is in full control of security.