Niger troops kill 57 Boko Haram fighters: security sources

Niger troops have killed 57 Boko Haram jihadists during fighting in the southeast Niger, a security source told AFP Monday.The Boko Haram fighters were "clearly well-trained and certainly well informed about our positions," the source said.The fighting took place in Gueskerou, a village in the West African country's southeastern region of Diffa bordering Nigeria, from where a bloody uprising by Boko Haram fighters has spilled over.