Brazil drug gangs spark prison riot, at least 56 dead

By Alonso Soto BRASILIA (Reuters) - A prison riot has left at least 56 dead, with decapitated bodies thrown over prison walls in the bloodiest violence in more than two decades in Brazil's overcrowded penitentiary system, officials in the Amazon city of Manaus said on Monday. Sergio Fontes, the security chief for Amazonas state, told a news conference the death toll could rise as authorities get a clearer idea of the rebellion, sparked by a fight between rival drug gangs. Fontes told reporters s