A new refugee camp with 2,500 temporary homes is being built in Nigeria's north-eastern city of Maiduguri for a few of of the hundreds of thousands of refugees there who fled the Boko Haram uprising.

The camp - another sign that few expect the conflict to end soon - will house refugees occupying public schools, allowing classes to resume, hopefully next month, officials said.

Hundreds of thousands of children have not been to school for more than 18 months in Maiduguri and elsewhere in north-east Nigeria, where authorities closed all schools as they were targeted by the Islamic insurgents.

No-one knows how many refugees there are because most live with friends, family and strangers who have taken pity on them. Public grounds and the compounds of mosques and churches also provide refuge.

Some Nigerian officials have said there are about 200,000 refugees in Maiduguri, but Doctors Without Borders put the number at one million in August with hundreds arriving each week.