Nigeria's ruling party is looking for a new leader.
The death of more than 20 Roman Catholic worshippers in a church in southwestern Nigeria on Sunday has cast a pall over the summit.
Boakyewaa Lawrencia 
Nigeria's ruling party has begun the process of selecting a presidential candidate for next year's election.
President Muhammadu Buhari, who has served two terms in office, is not eligible to vie for re-election under the constitution.
He has not publicly endorsed any of the 23 candidates that attended an All Progressives Congress gathering in Abuja.
Whoever wins will lead the party in the election next February against the main opposition candidate, former Vice President Atiku Abubakar.
The death of more than 20 Roman Catholic worshippers in a church in southwestern Nigeria on Sunday has cast a pall over the summit.
