Stress fractures.

More than five people are dead after an angry mob attacked a police station in western China. According to Chinese media reports, a mob attacked the police building in Hotan in the Xinjiang region, taking hostages and setting it on fire. Paramilitary police are said to have then launched a counter attack in which several hostage takers were killed.
http://www.abc.net.au/news/2011-07-1...tation/2799554