 Thirith remained with the Khmer Rouge until her husband, Ieng Sary, was pardoned by the Cambodian government in 1998.After, she and Sary lived together near Phnom Penh until both were arrested by Cambodian police and tribunal officials on 12 November 2007.Thirith is allegedly responsible for the planning, instigating, and aiding/abetting the crimes of the Khmer Rouge against Cambodians during the time of Khmer Rouge control.