002/19-09-2007-ECCC-OCIJ ЮŲŠ / No: D427 their arrival in the same way that he was informed of the arrival of the other prisoners, namely by way of lists,1893 and that S-21 was never required to organise the transportation of the Vietnamese from the theatre of operations.1894 This claim is contradicted by Him Huy, who states that on two occasions, in 1977 and 1978, Duch sent him to the battlefront in Svay Rieng to escort Vietnamese soldiers to S-211895 Furthermore, [REDACTED] states that he was sent to work on the border in 1977 and saw S-21 personnel transporting Vietnamese prisoners of war in S-21 trucks from the theatre of operations.1896 Arrests of S-21 personnel 439. S-21 personnel were also arrested and either sent to S-24 for reeducation,1897 or imprisoned in S-21.1898 Cadres could be sent to S-24 for minor offences, especially when someone they knew was detained at S-21.1899 For more serious offences, such as allowing a prisoner’s escape, death or suicide before interrogation,1900 the person responsible was considered as a traitor to the revolution, and was arrested.1901 However, some witnesses suggest that the majority of S-21 staff members who were arrested, specifically those from Division 703, had not actually committed a serious offence.1902 440. A former guard states that only Duch could order the arrest of S-21 personnel.1903 However, Duch maintains that “The S-21 Committee was competent for the first form of purge (sending a staff member to S-24). Conversely, Son Sen, and later Nuon Chea, were competent for the second form of purge (imprisoning a staff member in S-21)”.1904 Detention conditions 441. Prisoners arrived in S-21 almost daily in groups and at all times of the day or night.1905 The Special Unit escorted them into the prison, usually handcuffed and blindfolded.1906 The prisoners were then registered by the Documentation Unit.1907 They then had to provide biographical information1908 and a summary of their answers was prepared.1909 Generally, they were not informed of the reasons for their arrest. Upon arrival, the prisoners were also photographed.1910 They were then escorted to their cells by the guards.1911 442. The prisoners were locked up practically 24 hours per day.1912 The detention centre had small individual cells1913 and collective cells holding 20 to 30 detainees, and possibly more. In the collective cells, the prisoners were shackled and chained to one another by their feet.1914 Women detainees were not shackled,1915 except for those who were resisted.1916 Couples and families, including children, were separated.1917 All of the prisoners were under constant 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. 114