Nigeria 'failed to act on warnings before mass abduction of schoolgirls'

Nigeria's security forces failed to respond to several warnings that suspected Boko Haram extremists were on their way to a town where 110 schoolgirls were seized in a mass abduction last month, Amnesty International has said.

The rights group cited security sources, parents and others as saying the military and police received at least five calls in the hours before the attack, which reminded many of the abduction of 276 Nigerian schoolgirls in Chibok by Boko Haram extremists in 2014.