PHNOM PENH, Cambodia (AP) — Cambodian officials inaugurated a memorial at the Tuol Sleng Genocide Museum on Thursday to remember more than 12,000 people tortured at the site when it was a Khmer Rouge prison. Buddhist monks chanted prayers at a ceremony at the museum, a former high school that the Khmer Rouge converted into a prison after taking power in 1975. Deputy Prime Minister Sok An presided over the ceremony, which was attended by representatives from the United Nations and a U.N.-backed tribunal trying former Khmer Rouge officials. He said the 6-meter (20-foot) -high memorial, designed like a Buddhist stupa, will "serve as an educational tool for the next generations to remember and prevent the return of such a dark regime.Read more on NewsOK.com