Presidential and parliamentary elections in Nigeria have been postponed by a week, five hours before the crunch vote was scheduled to take place.
The elections will now be held on February 23 due to logistical problems, the electoral commission said.
"Following a careful review of the implementation of its logistics and operational plan and the determination to conduct free, fair and credible elections, the commission came to the conclusion that proceeding with the elections as scheduled is no longer feasible," Mahmoud Yakubu, the Independent National Electoral Commission (INEC) chairperson, said following an emergency meeting in capital, Abuja early on Saturday morning.
"This was a difficult decision for the commission to take, but necessary for the successful delivery of the elections and the consolidation of our democracy."
Several states in Africa's most populous country did not receive ballot materials hours before the delay was announced.
Governorship and local elections, earlier scheduled for March 2, will now be held on March 9.