Three people were killed in an explosion in Kashgar, a city in China's restive north-west region of Xinjiang, on Sunday afternoon, less than 24 hours after violence left 8 dead and scores injured in the same city, the official Xinhua News Agency reported. Sunday's explosion happened in downtown Kashgar at 4:30 pm, the report said, adding that a police officer was among the dead and that three people were also injured, according to dpa . Police arrested two suspects, according to the report.