Nigeria’s main opposition People’s Democratic Party (PDP) has rejected President Muhammadu Buhari’s victory in Saturday’s fiercely contested election.

PDP spokesman Kola Ologbondiyan told Report Focus that the results were totally unacceptable.

He said the party was questioning the high numbers of votes for Mr Buhari in insurgency-hit states such as Borno and Yobe whereas the number of votes for PDP candidate Atiku Abubakar in states in the south were “reduced”.

The PDP would hold a meeting later today and decide how to proceed, Mr Ologbondiyan added.

Reuters news agency quoted another PDP official, Osita Chidoka, as saying the party would consider mounting a legal challenge against the result.

“We will explore all options including the belief that the legal process in Nigeria is one of the ways to resolve issues,” Mr Chidoka said.

The electoral commission denies the vote was rigged.