BEIJING, May 4 (Reuters) - A bomb exploded in a hotel room in China's south western province of Yunnan on Thursday, killing a man and a woman and injuring two people, police and media said.

The bomb went off early in the evening at the Jindi Hotel in Jinggu, a county dominated by Dai and Yi minorities, littering the streets outside with shards of broken glass, the local Chuncheng Evening News reported.

An official with the local police department told Reuters there was a bomb, but he declined to provide his name or further details of the incident.

Despite the authorities' tight grip in areas which are potential sources of unrest, personal grievances sometimes explode into violence. In 2005 a farmer with terminal lung cancer set off a home-made bomb on a bus, killing one and wounding 31.

AlertNet news is provided by