A huge explosion at an industrial gas plant in southeastern Nigeria razed nearby buildings and killed several people on Christmas Eve.
Two bomb blasts ripped through mosques in northeast Nigeria, killing at least 55 people and injuring more than 100.
UN chief Ban Ki-moon begins a visit to Nigeria at the weekend to commemorate a deadly attack on the global body by Boko Haram militants and meet the country's new leader.
UN Secretary-General Ban Ki-moon called on Nigeria to step up medical and psychological aid to survivors of Boko Haram attacks and victims of rape.
President-elect Muhammadu Buhari vowed to rid Nigeria of the "terror" of Boko Haram after his historic election victory.
Main opposition candidate Muhammadu Buhari won Nigeria's presidential election by 2.57 million votes.
Two suicide attacks in northeast Nigeria killed at least 38 people, less than six weeks from elections, as the leader of Boko Haram vowed to disrupt the vote.
Nigeria's police chief warned politicians and their supporters against violence before next month's presidential election.
At least eight people were killed in Cameroon on Monday in a rocket attack blamed on the Islamist group Boko Haram in neighbouring Nigeria.
The head of Nigeria's main teachers union called for a boycott of next week's re-opening of schools.
At least three people were killed when a building linked to one of Nigeria's most famous preachers and televangelists collapsed in Lagos.
Nigeria said that resumption of classes in all public and private schools will be delayed by a month to put in place "preventive measures".
Nigeria became the latest country to declare a national emergency over the deadly Ebola virus.
Suspected Boko Haram militants kidnapped the wife of a senior Cameroonian minister and a traditional leader in attacks in the far north of the country that left at least six dead.
A military court in Cameroon has handed down prison sentences of up to 20 years to 14 Boko Haram members, the country's state broadcaster Crtv reported.
Kazakhstan, a Central Asian oil producer, will expand its cooperation with the Organization of Petroleum Exporting Countries (OPEC).
Nigerian authorities have arrested one suspect, and killed another, after a bomb claimed 21 lives in a shopping centre in the capital Abuja, a city gripped by fear of attacks by Boko Haram Islamists.
Hundreds of youths took to the streets of Nigeria's second biggest city on Sunday to protest against naming the ousted central bank chief Sanusi Lamido Sanusi as Emir of Kano, the country's number two Muslim leader.
Hundreds of thousands of people flocked the streets of Nigeria's second city on Friday to pay their final respects to one of the country's most influential traditional rulers as he was laid to rest.
Nigeria's highest ranking military officer on Monday gave a glimmer of hope to the families of more than 200 schoolgirls held by Boko Haram militants, revealing they had located the missing teenagers.
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