Rohingya Muslims in Bangladesh should not be returned to Myanmar until an assessment has been carried out to ensure their safety, The UN High Commissioner for Refugees warned on Monday, The Associated Press reports. Dozens of Rohingya Muslim families on a list of refugees set to be repatriated to Myanmar later this week have fled from camps in Bangladesh where they were living, according to Reuters, even as Myanmar prepares to begin receiving them. Bangladesh and Myanmar agreed in late October to begin repatriation of hundreds of thousands of Rohingya refugees who fled Myanmar. The repatriation of the first batch of 2,000 refugees is set to officially begin on Nov. 15 and officials in Myanmar said on Sunday they were ready to begin receiving refugees this week.