At least 12 people were killed Saturday in separate incidents in Mexico, police said, according to DPA. One of the victims was Jose Fuentes Esperon, a candidate for the legislature in the southern state of Tabasco. Fuentes Esperon, his wife and two children were murdered in their home. Relatives who found their bodies informed reporters. Fuentes Esperon, a politician of the Revolutionary Institutional Party (PRI), was standing for office in next month's election. In the southern state of Guerrero, police said Saturday that they had found the bodies of two boys who had gone missing a week earlier. The boys had their hands tied and their bodies were riddled with gunshot wounds, police said. Meanwhile, in Santiago, in the northern Mexican state of Nuevo Leon and about 50 kilometres south of capital Monterrey, six people died in a clash between alleged hitmen and the Army. More than 4,000 people have been killed in Mexico so far this year in incidents linked to organized crime.