Several people have been killed in an attack at a Rohingya camp in Bangladesh's Cox's Bazar on Friday (October 22), according to police officials. It's the latest incident of violence in the world's largest refugee settlement.A gang armed with guns attacked a religious school before dawn in Cox's Bazar's Ukhiya area. Teachers, volunteers and students were among the dead, according to a senior member of the police. He added that one Rohingya man with weapons and ammunition had been taken into custody.More than a million Rohingya live in a cluster of refugee camps in southern Bangladesh. Most had fled neighboring Myanmar during a military crackdown there in 2007.Residents say the sprawling settlements have become increasingly violent, with armed gangs vying for power, kidnapping critics and warning women against breaking conservative Islamic norms.