Nigeria's government is making "no meaningful effort" to rescue more than 250 children abducted from a Catholic boarding school in the central state of Niger last Friday, the main Catholic cleric in the region has told the BBC.
But Bishop Bulus Dauwa Yohanna's accusation was disputed by the state's police chief, who accused the school of failing to co-operate with its search and rescue operations.
It is unclear who abducted the children from St Mary's school in Papiri village, but criminal gangs have been involved in kidnappings for ransom across Nigeria.
US President Donald Trump has threatened to intervene militarily in Nigeria if the government fails to stop "the killing of Christians".
Nigeria is the most-populous state in Africa, with a large Christian and Muslim population.
