01005815 Case File No. 002/19-09-2007/ECCC/TC E313 272. CPK leaders also corresponded by letter; for example, Witness OEUN Tan (who worked at K-1 from 1975 to 1979857) remembered delivering letters back and forth between POL Pot and NUON Chea, and between POL Pot and SON Sen.858 As previously noted, offices of the Party Centre occasionally exchanged orders, requests and information by telephone too.859 273. Telegrams received by the Party Centre from the lower echelons were usually taken to K-1, where they would be decoded (if necessary), sorted and redistributed as appropriate.860 Witness OEUN Tan told the Chamber that all of the telegrams he delivered to POL Pot were subsequently delivered to NUON Chea. 861 Having reviewed the telegrams on the Case File, and having heard evidence to the effect that there were frequent meetings and consultations between NUON Chea and POL Pot and that they worked together closely, the Chamber is satisfied that most of the telegrams sent to POL Pot during the DK period were also seen by NUON Chea.862 6.2.2. Between the Party Centre and the Zones or Autonomous Sectors 274. Zones and Autonomous Sectors reported directly to the Party Centre. 863 At a meeting attended by several Zone and Autonomous Sector representatives in March 1976, the Standing Committee issued the following instructions concerning the applicable procedure for writing reports: It is proposed that a report on the status of dykes be sent to the Standing Committee every week. The report should either present a general description of the situation or, where necessary, provide details on each aspect. It is proposed that a brief report be sent by Functions – Nuon Chea, para. 317; Section 8: Roles and Functions – Khieu Samphan, paras 373, 386, 408. 857 T. 13 June 2012 (OEUN Tan), p. 38. 858 T. 13 June 2012 (OEUN Tan), p. 98. 859 See Section 6: Communication Structure, para. 252. 860 OEUN Tan Interview Record, E3/33, 9 October 2008, p. 9, ERN (En) 00235133; T. 29 August 2012 (NORNG Sophang), pp. 72-73; KUNG Sokha Interview Record, E3/465, 21 January 2008, p. 6, ERN (En) 00204758. See also, T. 29 August 2012 (NORNG Sophang), pp. 69-70; T. 3 September 2012 (NORNG Sophang), p. 31 (indicating that “Pon” and “Thé”, who worked at K-1, had the authority to decide to whom incoming telegrams would be copied). 861 T. 13 June 2012 (OEUN Tan), p. 64. 862 See also Section 7: Roles and Functions – Nuon Chea, paras 317, 328. 863 T. 11 June 2012 (SAO Sarun), p. 13; T. 19 June 2012 (YUN Kim), pp. 28-29; T. 4 September 2012 (NORNG Sophang), pp. 16-17. Case 002/01, Judgement, 7 August 2014 - Public 148