At least 56 people were killed and dozens more injured when two female suicide bombers blew themselves up in a refugee camp in Nigeria.
Around 78 people were being treated for injuries after the twin explosions at the camp in Dikwa, which houses some 50,000 people forced to flee from Islamist militant group Boko Haram.
Officials in Nigeria have pinned blame for the attack on the extremists.
More than 20,000 people have been killed in Nigeria since the Boko Haram insurgency began six years ago, and 2.5 million made homeless.
It comes after another two suicide bombers, believed to have come from Nigeria, killed 10 people and injured 40 in a border village with Cameroon's Far North province.