Mexico says it is now sure that 43 students who disappeared in September were murdered on the orders of a drug cartel which mistook them for members of a rival gang.<br /><br /> Authorities made the announcement despite the fact that the remains of only one of those missing have been formally identified so far. <br /><br /> Citing confessions obtained and forensic evidence, Mexican <br />Attorney General Jesus Murillo Karam, told a news conference:<br /><br /> “These and many other elements retrieved during the investigation enabled us to make a logical, reasonable analysis and conclude, without a doubt, that the trainee teachers were deprived of their freedom, killed, incinerated and thrown into the San Juan river, in that order. This is the historical truth of the facts.”<br /><br /> Until now, the government had said only that the students were almost certainly killed after clashing with corrupt police officers who handed them over to a drug gang. <br /><br /> The mayor of the southwestern city of Iguala and his wife were arrested as tw
