A human rights investigation team from the Commission of Inquiry on the Central African Republic and a survivor visit a site in Bangui where extrajudicial executions took place and a mass grave was discovered. UN / OHCHR time to provide full testimony, which needs to be considered in planning the commission’s/ mission’s work. It may be difficult for the commission/mission to allay the fears of victims and witnesses or to meet their expectations, making them reluctant to provide information. Information on the whereabouts of victims and potential witnesses may change when communities flee, and it may be difficult for the commission/mission to trace them. In many conflict situations communities become polarized based on, for example, support for the Government or for opposition armed groups, ethnicity or religion. Assessing the information gathered with regard to its validity and truthfulness, as well as the reliability of sources, as mentioned below, is thus particularly important, highlighting the need for adequate corroboration. The commission/mission should also guard against any perceptions in the community that its inquiry is biased by making efforts to collect testimonies from all sections of the population. An ongoing armed conflict presents additional logistical challenges for a commission/mission. Commercial flights to the country or between different locations within the country may be halted. This may require the commission/mission to make journeys by road, including from neighbouring countries, or to rely on United Nations aircraft if these are operating in that 58 COMMISSIONS OF INQUIRY AND FACT-FINDING MISSIONS ON INTERNATIONAL HUMAN RIGHTS AND HUMANITARIAN LAW