Africa's most populous country is fighting the long-running conflict across its northern regions, complicated by inroads made by militants from the Sahel, and non-ideological "bandit" gangs.
The first group of Nigerians repatriated from South Africa following escalating anti-immigrant attacks landed in Lagos on Thursday, AFP journalists saw.
Foreign nationals have reported being intimidated and beaten by mobs going door to door, families forced from their homes, and many have left in the face of the threats.
At the heart of the carnival is a highly competitive cultural showcase featuring five heritage bands competing for the coveted Band of the Year title.
The rise in sea levels poses a major threat to Nigerian coastal areas, and several entire communities have already been swallowed up by th
Some 39 people have died from the waterborne disease across Borno in recent weeks, with at least 4,204 infected, according to the latest figures from local health authorities.