US Secretary of State, John Kerry arrives Sokoto-Nigeria

US Secretary of State, John Kerry arrives in the extreme northwest of Nigeria city of Sokoto, lauds Sultan of Sokoto, Alhaji Sa’ad Abubakar for promoting religious tolerance and understanding among Nigerians

"He will meet with President [Muhammadu] Buhari to discuss counterterrorism efforts, the Nigerian economy, the fight against corruption, and human rights issues," said a U.S. embassy statement.

"In Sokoto, he will deliver a speech on the importance of resilient communities and religious tolerance in countering violent extremism. In Abuja, the Secretary will meet with a group of adolescent girls working to change community perceptions that devalue the role of girls in society. He will also meet with northern governors and religious leaders," the statement added. 

Kerry's visit - his third as Secretary of State and likely the last for top Obama administration officials - comes a day after the Nigerian army announced the killing of top Boko Haram commanders in an "unprecedented air raid".

The army also said the "so-called Abubakar Shekau was 'fatally wounded' in the airstrike, in which at least 300 Boko Haram fighters were said to have been killed.

The Nigerian military had twice claimed it killed the Boko Haram leader in previous operations, a claim which Shekau refuted in subsequent video releases.