That's all for our live coverage of Nigeria's elections where counting is now under way.

It seems that over all the process went off peacefully, but there have been some incidents of violence and some irregularities have been observed.

Results are expected to start coming through by Sunday and a final tally could be known late on Monday or early Tuesday morning - but that's not guaranteed.

You can keep up to date with news from the election on our web page or listen to the BBC World Service.

And here's a reminder of just how long that ballot paper was, from a polling station in Port Harcourt, southern Nigeria:

Image source, Getty Images

Nigerians have voted in the delayed presidential and parliamentary elections.

Some feared that the postponement of the election from last week may have led to low voter turnout.

Others have however hailed the process as peaceful and smooth.

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Vote buying has been observed by election monitors from NGO the Centre for Democracy and Development (CDD)

The CDD is one of the main pro-democracy organisations in Nigeria and is considered very credible.

Their preliminary report on the election says "unfortunately, there were many areas where vote buying was observed".

In Enugu state its team saw some men collecting money outside a polling station after they had cast their votes.

In Osun state, CDD monitors observed people writing their names down after they had voted so that they could be given money, although observers didn't see the exchange of cash.

In Bayelsa state they observed party agents promising to contact voters later, implying that they will get paid at a later date.

Overall, the CDD said it was "pleased to note that elections are going on across the country, and there is significant turnout of voters".

The BBC's Chris Ewokor has been at a polling station near the centre of the capital, Abuja, where voting has now ended.

Now that counting has begun most voters have left but security and party agents are watching the process.

Voting went on peacefully, our correspondent adds.

BBC Igbo's Ikechukwu Uzu-Kalu is in Aba, Abia state, south-east Nigeria, where at one polling station the counting of votes has already begun.

Results are expected to start coming in from Sunday and a final tally is likely by late Monday or early Tuesday morning.

Gunmen have shot dead a prominent member of President Muhammadu Buhari's All Progressives Congress (APC) and his brother in Rivers State, south-eastern Nigeria, police told the AFP news agency.

The APC said that a council chairman of Andoni local government area and an ex-official member of APC Rivers State Executive committee were shot dead, reports the Vanguard newspaper, external.

The gunmen and the possible motive are unknown.

Analysts SBM Intelligence told AFP that 233 people have been killed in 67 incidents of election-related violence from last October to Friday. That is an average of two people per day.

The BBC's Kunle Falayi has witnessed some angry scenes at several polling stations in the Isolo district of the commercial capital, Lagos.

People have been reacting as ballot boxes were smashed in one place and burned in two others.

The motive for the attacks is not clear.

Polling stations have officially closed in many parts of Nigeria and election officials are making sure that unused ballot papers can't be stolen.

The BBC's Fergal Keane saw them striking through the voting forms with a pen at a polling station in the capital, Abuja:

While voting at some polling stations voting has now ended, BBC Focus on Africa radio's Bola Mosuro is at one place where it has only just begun.

She's in Karu, in Nasarawa state, near the capital, Abuja, where she says that voting started at 14:00 (13:00 GMT).

Officially, polls were supposed to close at that time.

She says tempers were fraying as people waited for things to get going.

The delay was down to the late arrival of election materials and the presence of just a handful of election officials, Bola reports.

Voters have returned to a polling station in Lagos that was disrupted by people who attacked the voters.

The poll was meant to close at 14:00 (13:00 GMT) but has been extended at this station in the district of Surulere.

One of the voters who was attacked told BBC Yoruba's Kunle Falayi that a group of young men "brandishing weapons: cutlasses, axes and stakes" attacked the voters to prevent them from voting for any party other than APC.

"What they were saying was that if you were not APC, you'll be attacked", said Ralph Onodike who was attacked on the arm:

"Literally they came charging at everybody."

Mr Onodike added that the attackers charged him with an axe on the scalp, leaving a bump.

As we reported earlier, soldiers have arrested two men at the scene.

Nigeria's electoral commission, Inec has announced automatic extension of time for polling units which had a delay in opening.

Inec spokesman Festus Okoye says polling stations' opening hours will be extended by the amount of time they were delayed from opening.

Mr Okoye acknowledges that there had been problems with some of the smart cards used to vote.

Mr Okoye told the BBC's Joshua Ajayi that the results sheets were also absent in some polling stations.

He added there had been security challenges in some states.

Officially polling stations closed 20 minutes ago.

Voting has stopped in some places, like at this polling station in Abeokuta, Ogun State, where the sorting of ballot papers has begun:

But the electoral commission promised that anyone still in the queue at 14:00 (13:00 GMT) can still vote.

Vice-President Yemi Osinbajo has tweeted a picture of himself casting his votes earlier today.

The images are notable for the huge number of photographers and video journalists surrounding the man.

Mr Osinbajo is once again running as vice-president on the ticket of President Muhammadu Buhari.

Soldiers have arrested two men in the commercial hub, Lagos, who were accused of trying to prevent people from voting for another party apart from the APC.

BBC Yoruba's Kunle Falayi reports that the soldiers swooped on the two in Surulere.

At a polling station in the capital, Abuja, BBC Africa reporter Chris Ewokor met one woman who was queuing with her three-month-old child.

She said she wanted to make sure that she had her say "in who presides over Nigeria".

The BBC's Mansur Abubakar has been visiting different polling stations in Kano, in the north of Nigeria.

He came across voters queuing outside this concrete cylindrical building:

Only one person is allowed in at a time to vote, he says.

He also met ice cream seller Muawiya Muhammed, who said he was hoping to cash in on voters' need for some cool refreshment.

He told Mansur that he had traveled to another state - Jigawa - to vote last week, but the election was postponed and he could not afford to go back to vote.

At another polling station he snapped this picture of the separate male and female queues to vote:

Dooshima Abu
Benue, Nigeria

Delays at the Adaka polling station in Makurdi, Benue state were due in part to temporary election staff not being paid their allowances.

They refused to work until the allowances were paid.

There was also a delay in delivering election materials because of an inadequate number of vehicles.

Those who came to vote clustered in the shade to escape the heat, and voting passed peacefully once it was underway.

Abdul Mohammed Isa
Minna, Nigeria

Gen Abdulsalami Abubakar, the country's last military head of state, has come out to vote here in Minna, north-central Nigeria.

He urged those seeking office to accept the results in good faith.

Gen Abubakar said he was impressed by the large numbers who were waiting to vote.

He governed Nigeria for just under a year from June 1998. He handed power over to Olusegun Obasanjo in May 1999, after he was elected president.

This year marks 20 years since the return of democracy to Nigeria. Up until 1999, there were either short-lived civilian administrations or military rulers.

BBC Focus on Africa presenter Peter Okwoche, who's in the capital, Abuja, came across one voter who was determined to get involved in the election despite the week-long delay.

Ishaq Dan-Imam, Kogi state

Voting started late in parts of Lokoja in Kogi state, central Nigeria.

At some polling centres I visited, election officials were setting up tables and other putting out election materials at 09:30 (08:30 GMT) - 90 minutes after voting was supposed to have begun.

One voter, Philip Egba, said the election officials were "wasting precious time".

Once the process got going things appeared to be running smoothly and those turning out were keen to get their votes in.