 Uyghurs maintained that the attacks started after the night shift at around 12 @.@ 30 a.m. , when Han <unk> stormed into Uyghur dormitories and started indiscriminate and <unk> <unk> . Amateur videos posted online showed brutal attacks , and Han chasing Uyghurs through the <unk> floors . One man said that he saw that security had been overwhelmed by the arrival of outside gangs ; he said it was common knowledge that the outsiders brought in <unk> . Han and Uyghur witnesses interviewed by the foreign press thought the casualties had been understated by the authorities : a Han claimed to have killed seven or eight Uyghurs ; Uyghurs cited " merciless " assaults on those already in ambulances . The rioting stopped soon after the police arrived . A policeman explained their delay in arriving at the scene due to difficulties in assembling enough officers . The two dead men were later named as <unk> <unk> and <unk> <unk> , both from Xinjiang . 
