ໄນຈີເຣຍ ອ້າແຂນ ຮັບເອົາ ປະຊາທິປະໄຕ

Nigerian former Gen. Muhammadu Buhari speaks to journalists in Abuja, Nigeria, April 1, 2015.

Nigerians celebrate the victory of Muhammadu Buhari in Kaduna, April 1, 2015.

Newly-elected Nigerian president Muhammadu Buhari (right) and his deputy, Yemi Osibnajo, sing the national anthem after speaking to journalists in Abuja, April 1, 2015.

Nigerians celebrate the win of democratically elected president Muhammadu Buhari in Kaduna, April 1, 2015.

Nigerians celebrate the victory of democratically elected president Muhammadu Buhari in the streets of Kaduna, April 1, 2015.

Supporters of presidential candidate Muhammadu Buhari and his All Progressives Congress (APC) party celebrate in Kano, March 31, 2015.

Supporters of presidential candidate Muhammadu Buhari cheer as they watch news coverage of election results favorable to them on a street in Lagos, March 31, 2015.

The opposition All Progressives Congress (APC) declared victory for its candidate, former military ruler Muhammadu Buhari, in Nigeria's presidential election, saying that the country is "witnessing history."

A Nigerian man listens to the election commission announce results on his radio in Kano, March 31, 2015.

Independent National Electoral Commission chairman Attahiru Jega (left) views election results at the coalition center in Abuja, March 30, 2015.

Nigerian former General Muhammadu Buhari speaks moments after he was presented with a certificate to show he won the election in Abuja, Nigeria, April 1, 2015.