In the early hours of July 10, Yan Xiaoqiang, an 18-year-old man, was taken by the police from his home in Haochong Village, Nanlang Town, Zhongshan City, for investigation as he was suspected of entering a dormitory for female workers at a knitting factory through a window. At around 4:40 am, two hours later, the police sent Yan Xiaoqiang back to a place not far away from his home. However, Yan Xiaoqiang did not go home. At around 6 pm on the afternoon of the 11th, Yan Xiaoqiang's body was found in a reservoir nearby.