In Cambodia, the death toll of a massive stampede at a Cambodian water festival soared above 450 on Wednesday, as the victims' grieving relatives expressed anger about security at the event. Thursday will be a national day of mourning there. Prime Minister Hun Sen has described the disaster as Cambodia's worst tragedy since the Khmer Rouge's 1975-1979 reign of terror, which killed up to a quarter of the population. The authorities continued to investigate why throngs of revellers had panicked, crushing and trampling people underfoot on an overcrowded narrow bridge in Phnom Penh. In the meantime, at the entrance to the now notorious crossing, still closed off to the public, locals burned incense and prayed for the souls of the deceased. They laid out flowers, cake and bananas as offerings.