Just two weeks ago, Cambodge Mag published a profile of Bou Meng, one of the last known adult survivors of S-21. On Friday night, he passed away at the age of 85, from age-related illness, according to the Extraordinary Chambers in the Courts of Cambodia (ECCC). With him goes one of the last direct witnesses to what Tuol Sleng was.

Spared for his talent as a painter, Bou Meng survived S-21 by putting brush to canvas for his own captors. A portrait of one of the last seven known adult survivors of the Khmer Rouge regime's deadliest prison.