A local government official said a car bomb has killed eight and wounded dozens of worshippers at a mosque in northern Yemen. The official said most of the victims were filing out of the Bin Salman mosque after Friday prayers in the city of Sa'ada. He spoke on condition of anonymity because he was not authorized to talk to media. Sa'ada lies about 200 kilometers north of Yemen's capital, Sana'a. Thousands of people have been killed in the area since a Shi'ite Muslim rebellion erupted in June 2004. The rebels have agreed to a ceasefire, but sporadic violence continues.