002/19-09-2007-ECCC-OCIJ ЮŲŠ / No: D427 47. The Standing Committee would meet frequently; Khieu Samphan stating approximately every seven to ten days.131 In addition, one witness states that whenever there was an important matter requiring discussion, a meeting of the Standing Committee would be called immediately in order to make a decision.132 D. OFFICES OF “870” 48. Existing at the CPK Party Centre level were a series of entities associated with the number “870”; a code which alluded to the highest level of the CPK Centre,133 including sometimes as a reference individually to Pol Pot.134 They are generally described as servicing or supporting the Standing Committee with regard to various political, administrative, communications, security and military tasks; answering in particular to the members of the Standing Committee located in Phnom Penh.135 49. The official names of the two most important of these entities were the “Political Office of 870”136 and the “Government Office”,137 also designated by the Standing Committeee as “Office S-71” or “Ministry S-71”.138 Minutes of meetings of the Standing Committee also refer to an entity called “Bureau 870” headed by Sim Son alias Yem, which the minutes suggest is endowed with responsibility for the taking of minutes during Standing and Central Committee meetings.139 50. The first Chairman of Political Office 870 was Soeu Vasy alias Doeun, who remained in this position until his arrest in 1977.140 Khieu Samphan was also assigned to work in this office, but has categorically denied having been, at any time, the chairmam.141 The Government Office (Office S-71) was chaired by Chhim Sam Aok alias Pang142 from 17 April 1975 until 1978, when he was arrested.143 He was replaced by Ken alias Lin,144 who remained in charge through to 6 January 1979. Although one witness states that Pang’s office was controlled by Pol Pot himself, with Pang under his direct authority,145 the evidence shows that Pang’s office also, more generally, “report(ed) to The Centre”.146 51. The distinction between these two offices was that Political Office 870, headed by Doeun, was tasked with matters of policy whilst Office S-71, headed by Pang, was responsible for more administrative and support tasks.147 Both Political Office 870 and Office S-71, as well as other entities associated with them, were often referred to by the unspecific term “Office Extraordinary Chambers in the Courts of Cambodia, National Road 4, Choam Chao, Dangkao Phnom Penh Mailing address: P.O. Box 71, Phnom Penh; Tel: +855(0)23 218914 Fax: +855(0) 23 218941. 20