BEIJING: The billionaire Chinese business tycoon who paid former rising Communist Party political star Bo Xilai millions in bribes has died in prison, state media reported Monday. Xu Ming, the chief accuser at the fallen Chongqing party chief’s trial, probably died of a “sudden heart attack,” the official Xinhua news service said, despite being only 44. State media acknowledged his central role in one of the country’s most lurid political episodes of recent decades. The politician, whose wife was convicted of killing a British businessman, was accused of accepting almost $3.5 million in bribes from Xu, who also provided the family with funds for a French villa. Bo was jailed for life for graft in 2013.