![Authorities investigate mainland visitor's manslaughter in HK(4/4)](http://www.ecns.cn/hd/2015/10/22/3e361593b319422394ca5b2a24a0d7c2.jpg)
Hong Kong police bring a suspect back to the incident site for investigation in Hong Kong, south China, Oct. 21, 2015. A Chinese mainland tourist died at a Hong Kong hospital on Tuesday morning after he was allegedly beaten unconscious by a gang of four men on Monday while mediating in a shopping dispute. (Photo: Xinhua/Lui Siu Wai)