( CNN) Myanmar is facing growing condemnation from the Muslim world over its failure to halt the violence directed toward the minority Rohingya ethnic group, amid protests across the globe.

So far, an estimated 123,600 Rohingya have fled to neighboring Bangladesh to escape escalating violence in their native Rakhine State, according to a United Nations official in Bangladesh.

Leaders of countries with majority Muslim populations including Malaysia, Indonesia, Bangladesh and Pakistan have led efforts to increase pressure on the Myanmar government.

Who are the Rohingya and why are they fleeing?