Rex Tillerson said, "I think it is important that the global community speak out in support of what we all know the expectation is for the treatment of people regardless of their ethnicity... This violence must stop, this persecution must stop." Prime Minister of the United Kingdom Theresa May's spokesman announced on 19 September that the country would stop training Myanmar's armed forces until the crisis was resolved. Maung Maung Soe, who led the operations in Rakhine in 2017, was sanctioned by the United States according to the Treasury Department. It added that the US had "examined credible evidence of Maung Maung Soe's activities, including allegations against Burmese security forces of extrajudicial killings, sexual violence and arbitrary arrest as well as the widespread burning of villages." On 28 September 2018, the UNHCR voted to establish an international body to gather evidence of alleged atrocities committed by Myanmar's security forces and prepare files for future independent criminal proceedings. On 18 March 2019, Myanmar set up a military court to investigate alleged abuses. Report by the OHCHR On 11 October 2017, the U.N. High Commissioner for Human Rights released a report titled the Mission report of OHCHR rapid response mission to Cox's Bazar, Bangladesh, which detailed the Burmese military's "systematic process" of driving away hundreds of thousands of Rohingyas from Myanmar. The report noted that prior to the attacks on 25 August 2017 and the military crackdown that ensued, the military pursued a strategy to: have male Rohingyas between the ages of 15–40 years arrested and/or arbitrarily detained have Rohingya political, cultural and religious figures arrested and/or arbitrarily detained ensure that access to food, livelihoods and other means of conducting daily activities and life be taken away from Rohingya villagers drive out Rohingya villagers en masse through repeated acts of humiliation and violence, such as [the] incitement of [sectarian] hatred, violence and killings instill deep and widespread fear and trauma (physical, emotional and psychological) in Rohingyas, through acts of brutality; namely killings, disappearances, torture, and rape (and other forms of sexual violence) Government restrictions Access to Rakhine State by journalists and observers has been restricted by the authorities. Myanmar stated in mid-September that it does not bar aid workers from Rakhine, but authorities on ground might restrict access for security reasons. Doctors Without Borders urged Myanmar on 18 September to grant international humanitarian organisations unrestricted and independent access to the conflict zone.