The Latest: Nigerian president 'disappointed' by poll delay Nigeria's president says he is "deeply disappointed" by the last-minute delay of Saturday's election until Feb. 23 and says he is going back to the capital to hear the electoral commission's explanation

YOLA, Nigeria -- The Latest on Nigeria's postponed presidential election (all times local):

11:10 a.m.

Nigeria's president says he is "deeply disappointed" by the last-minute delay of Saturday's election until Feb. 23 and says he is going back to the capital to hear the electoral commission's explanation.

President Muhammadu Buhari's statement says the commission had "given assurances, day after day and almost hour after hour that they are in complete readiness for the elections. We and all our citizens believed them."

His statement also appeals to Nigerians for calm, urges the commission to protect already distributed voting materials and stresses that his administration does not interfere in the commission's work.

He calls this a "trying moment in our democratic journey."

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11:05 a.m.

The top challenger to Nigeria's president in the now-delayed election is urging Nigerians to be patient and says he is heading back to the capital to consult with other "stakeholders" on the way forward.

Atiku Abubakar spoke to reporters outside his home in northern Adamawa state.

When asked if he was "dampened" by the last-minute postponement by the electoral commission, he said "absolutely not."

Both his party and the ruling party have condemned the last-minute decision to delay the vote.

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10:55 a.m.

A civic group monitoring Nigeria's now-delayed election says the last-minute decision to postpone the vote a week until Feb. 23 "has created needless tension and confusion in the country."

The Situation Room statement expressed shock and disappointment after assurances by the electoral commission that "everything was ready." It said the delay casts a "cloud of doubt" on the body's credibility and competence.

It called on political parties to avoid incitement and misinformation and called on the electoral commission to explain how Nigeria will pay for the costly election delay.

The commission in its early-morning statement cited unspecified "challenges" and said it would give more details Saturday afternoon.

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Nigerians have awakened to find the presidential election delayed a week from Saturday until Feb. 23 because of what the electoral commission has called unspecified "challenges." The country's top two political parties condemn the last-minute postponement.

Some bitter voters in the capital, Abuja, and elsewhere who traveled home to cast their ballots say they cannot afford to wait another seven days.

A spokesman for top opposition challenger Atiku Abubakar in Delta state said the electoral commission "has destroyed the soul of Nigeria with this act."

Abubakar is expected to speak to reporters later Saturday from his home in the north.

One ruling party campaign director said it is better to give the electoral commission time to conduct a credible vote.

The commission is to give more details in the afternoon.