A screen grab made on January 20, 2015 from a video of Nigerian Islamist extremist group Boko Haram obtained by AFP shows the leader of the Islamist extremist group Boko Haram Abubakar Shekau holding up a flag as he delivers a message. Boko Haram has ~ AFP PHOTO
Abuja - Nigeria counted ballots in its closely fought general election on Sunday after failures in controversial new technology pushed voting into a second day, with officials calling for calm in the tense wait for a winner.
Military fighter jets and ground troops also pounded Boko Haram fighters in the northeastern state of Bauchi after a series of attacks on polling stations on Saturday and Sunday.
Also read: Jega insists results will be out within 48 hours
The presidential election in Africa's most populous nation is the closest in the country's history, with the first credible challenge from an opposition party.
Jonathan's Peoples Democratic Party (PDP) has been in power since Nigeria returned to civilian rule in 1999 but is being pushed to the wire by former military ruler Muhammadu Buhari.
First results could be given from Monday, the head of the country's electoral commission said Sunday night.
"Our hope is to be able to declare within 48 hours (of polls closing on Saturday) and hopefully within less time," said Attahiru Jega, chairman of the Independent National Electoral Commission (INEC).
The prospect of a democratic transfer of power plus economic woes caused by the slump in global oil prices, concerns about corruption and fears about insecurity has energised the vote.
One government spokesman claimed there was a "record turnout" and voting was largely peaceful despite sporadic pockets of unrest mainly in southern states such as the key battleground of Rivers.
The technical difficulties, however, set the tone for a potential dispute as the PDP has opposed the use of the devices to authenticate voters, saying they were not sufficiently tested.
Buhari's All Progressives Congress (APC) supports the new system as a means of curbing voter fraud that has marred previous elections.
Wrangling over the results has already begun after counting on Saturday, some of it by flashlight with Nigeria regularly plunged into darkness by daily power cuts.
There has been a flurry of claimed constituency successes from both sides, and APC spokesman Lai Mohammed warned about vote manipulation.
"There must be no shenanigans," he said.
In the southern state of Rivers, thousands of opposition supporters demonstrated on Sunday to call for the cancellation of the elections locally because of alleged irregularities.
At the same time, the ruling PDP has described the failure of the technology to read biometric data such as fingerprints on the president's own voter identity card as a "huge national embarrassment".
Jega has conceded there were "challenges" but added: "From our general assessment, out of the 150,000 card readers which we have deployed, only about 450 were affected."
The devices were used again on Sunday but voters could also be processed manually if further glitches occurred.
Jega told a news conference on Sunday INEC was confident its objective of holding a "free, fair, credible and peaceful" election was "on course".
"We appeal to all Nigerians to remain peaceful as they await the return of these results," he added, with fears of a repeat of post-poll violence that in 2011 left some 1,000 people dead.
According to Jega, 90 polling units were unable to accredit voters and allow them to vote in Nigeria's financial hub of Lagos in the southwest.
An electoral officer in the Kosofe local government area told AFP: "We had challenges yesterday with the card readers but it is working fine now."
Wheelchair user Emily Adeyemi, 69, was accredited before others at her polling station.
"I was disappointed when I could not vote yesterday. But I am happy that I have been accredited to vote today," she said in Yoruba, which is widely spoken in the southwest.
All ballots were expected to be cast by Sunday night, with nearly 69 million people registered to vote.
To avoid a run-off, presidential candidates need to have won the most votes and at least 25 percent support in two thirds of Nigeria's 36 states and the Federal Capital Territory of Abuja.
Boko Haram has dominated the campaign, with military operations against the militants forcing a six-week delay to the scheduled February 14 election.
On Sunday, residents and a military source said soldiers supported by two fighter jets intercepted the militants at Dungulbe village, seven kilometres (four miles) from Bauchi city in the northeast.
"The fighter jets are pounding the enemy position while ground troops are engaging them," said a military officer in the city, who asked not to be identified, in an account supported by residents.
"The operation is still ongoing but the terrorists have suffered serious losses and are in disarray," the officer added.
The militants were believed to have come through the town of Alkaleri, 60 kilometres away, where there was a dawn raid on Saturday.
Gunmen in several vehicles attacked public buildings, security checkpoints as well as the office of the paramilitaries and the local electoral commission premises.
Bauchi police spokesman Haruna Mohammed confirmed that polling stations in nearby Kirfi were attacked on Sunday and election materials were destroyed.
A series of suspected attacks on polling stations in neighbouring Gombe state on Saturday killed at least seven.
Boko Haram leader Abubakar Shekau has vowed to disrupt the election, calling it "un-Islamic".
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