Zhu Hailun, Secretary of the Political and Legal Affairs Commission of Xinjiang Autonomous Region, said at a press conference that in the past few days, there had been several cases where the public were stabbed by unidentified needle-like objects in some public places in Urumqi. The informants include citizens of 9 ethnic groups: Han, Uygur, Hui, Kazakh, Mongolian, etc.. After hospital diagnosis and examination, no case has found any symptoms caused by pathogen of malignant infectious disease or toxic chemicals. No informant is hospitalized due to other diseases caused by needle stabbing, and there are no death cases either. There are also no cases requiring antiviral drugs for preventive treatment.