UN investigators found that the Myanmar's civilian government had "contributed to the commission of atrocity crimes" through their "acts and omissions."
"The State Counsellor, Daw Aung San Suu Kyi, has not used her de facto position as Head of Government, nor her moral authority, to stem or prevent the unfolding events in Rakhine State," the report states.
Members of the misson said that the international community's involvement in the process is important, and that the country could not be expected to hold its military to account.
Given "abusive military conduct going back half a century," and the "complete impunity of military commanders (and the) almost complete immunity given to troops," expecting justice from domestic processes was "simply naive," Christopher Sidoti, a member of the mission, said at a news conference.
A number of humanitarian organizations, including Amnesty International and Save the Children, backed the UN's recommendation that Myanmar be referred to the International Criminal Court.
"The international community needs to send a firm signal to all perpetrators, including the Myanmar military, that crimes of this magnitude will not be allowed to pass unaccounted for," said Michael McGrath, country director in Myanmar for Save the Children.
Last August, hundreds of thousands of Rohingya Muslims started fleeing across the border into Bangladesh into what's since become the world's biggest refugee camp. Many of those who crossed the border have recounted horrific stories of being driven from their homes under threat of death.
here are people we're very sure should be investigated."