Africa highlights: Buhari says Nigeria suddenly poor, Namibian boxer 'to stand trial in Rio'

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Men's 20KM Walk 17:30 GMT (approximately 1 hour 20 to complete for the winner)

Kenya's Simon Wachira and Samuel Gathimba (African Champion)  

Tunisia's Hassanine Sebei (African Silver medalist)

South Africa's Lebogang Shange (African Bronze medalist) and Wayne Snyman

Women's 1500m 3 heats from 23:30, 23:41, 23:52 GMT - includes African athletes

Top 6 in each heat and next six fastest advance to semi-finals 00:30 GMT /Sunday evening in Rio

Women's Hammer qualifying starts 01:10 GMT

Senegal's Amy Sene

Anyone over 72 automatic or best 12 advance to Monday's final

Men's 400m Round 1 starts at  00:05 GMT 7 Heats: includes African athletes

First three in each heat and next fastest three from all heats progress to 3 semi-finals on Sunday

Men's Long Jump qualifying starts at 00:20 GMT:

South Africa's Stefan Brits, Luvo Manyonga (pictured below), Rushwal Samaai

8.15m automatic advance or at least best 12 to the final on Sunday

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Swimming:

Men's 50m Freestyle:

South Africa’s Brad Tandy into the final as the eighth fastest qualifier from his semi-final (Final is at 01:44 GMT)

Men's 100m Butterfly:

South Africa’s Chad Le Clos (pictured below) into final as second fastest qualifier from the semi-final – Michael Phelps also into that final looking for his 23rd Olympic Gold Final is at 01:12 GMT

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Women's 200m Backstroke:

Zimbabwe's Kirsty Coventry into finals as sixth fastest qualifier from semi-finals – she is going for her eighth individual Olympic swimming medal – final is at 01:03 GMT

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A BBC producer has gained exclusive access to Ouagadougou complex in Libya's Sirte city after militias captured it from so-called Islamic State (IS) fighters who had used it as their headquarters.

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The corridors and marble-clad halls where former Libyan ruler Muammar Gaddafi hosted many African and Arab dignitaries are now littered with concrete debris and their walls pock-marked with bullet holes and mortar-shells.  

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The name of the complex reflects the pan-Africanist spirit that Col Gaddafi championed before he was killed by Nato-backed forces in 2011, plunging the country into chaos. 

Sirte was the site of the foundation of the African Union in 1999. The Sirte Declaration, as it became know, was a proud achievement for Col Gaddafi,

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Today, militiamen are clearing the surrounding areas of mines, but are still threatened by snipers dispersed in residential districts of Sirte, the birthplace of Col Gaddafi.  

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The head of the anti-IS operation told the BBC that Sirte could fall within seven days. 

The Americans started an air campaign last week, targeting IS militants in the city. Despite the air cover, the battle for control of the city is proving to be a deadly, painstaking, street-by street fight.

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People just can't get over Ethiopia's Almaz Ayana winning the 10,000m women's race and breaking the world record. 

Here's a selection of their views on the BBC Africa Facebook page: 

Quote Message: It was a great achievement. Proud of her. She lifted not only her country but Africa in general." from Ahmed Bougoudi

It was a great achievement. Proud of her. She lifted not only her country but Africa in general."

Quote Message: I always knew that Africa's first gold medal would come either from Ethiopia or Kenya. Now I'm right. Congrats Ayana! Congrats Ethiopia!! Congrats Africa." from Joe Ejiofor

I always knew that Africa's first gold medal would come either from Ethiopia or Kenya. Now I'm right. Congrats Ayana! Congrats Ethiopia!! Congrats Africa."

Quote Message: Great job for Ayana, I wish her all the best, congratulations Africa."

Great job for Ayana, I wish her all the best, congratulations Africa."

Quote Message: It's a great run which shows Ethiopia has got younger blood that fills the footsteps of the giants." from Kidist Ethenesh

It's a great run which shows Ethiopia has got younger blood that fills the footsteps of the giants."

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This will go down as one of the greatest long-distance running feats of all time. 

Almaz Ayana ran alone at the front for most of the race and broke the 23-year-old world record by more than 14 seconds. 

Ma Junren - the coach of the previous world record holder, China’s Wang Junxia - was sacked as the nation’s Olympic trainer after several of his athletes failed drugs tests, although Junxia never failed a test herself. 

No-one had come with 22 seconds of that old world record since 1993. 

Ayana adds Olympic gold to her World Championship gold in 5000m from last year and will be going for that title in Rio too, those heats begin on Tuesday.

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Zambians are eagerly waiting for the results of the elections that was held yesterday. 

BBC's Focus on Africa Akwasi Sarpong is at the results centre in the capital, Lusaka. . 

He is reporting live on Facebook from 15:30 GMT ahead of the presidential results expected to be announced tomorrow.  

He sent us these pictures: 

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The Twitterati does not know quite what to make of Almaz Ayana's 10,000m world record, breaking a 23-year mark:  

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Women's marathon world record holder Paula Radcliffe has been commenting on Ethiopia's Almaz Ayana setting a new record in the 10,000m race with her time of 29 minutes 14.46 seconds.

She said on BBC TV: 

Quote Message: I'm not sure that I can understand that. When I saw the world record set in 1993, I couldn't believe what I was seeing. And Ayana has absolutely blitzed that time.

I'm not sure that I can understand that. When I saw the world record set in 1993, I couldn't believe what I was seeing. And Ayana has absolutely blitzed that time.

ReutersCopyright: Reuters

Namibian boxer Junius Jonas, who is accused of attempting to sexually assault a maid at the Olympic village in Rio, will remain in Brazil in the custody of Namibia's military attache until he stands trial,  the southern African state's Olympic team manager Jesse Schickerling has told the BBC.

He was released yesterday ahead of his lightwelter fight (64kg) fight against France's Hassan Amzile, which he lost.

Brazilian police arrested him on Sunday after a maid alleged that Junius, 22, had grabbed her and tried to kiss her. She also accused him of offering her money to have sex.

He has not yet appeared in court and has not yet pleaded.  

ReutersCopyright: Reuters

Mr Schickerling said that Jonas is a professional athlete but the case must have had a big impact on him. 

He said that Jonas was not allowed to go into the Olympic village and would remain in the custody of the Namibian embassy. 

Jonas will stand trial, and he expected the process to take a few months, Mr Schickerling added. 

The incident has had a huge impact on whole team and they are all shocked that someone with Jonas' international experience has found himself in such a situation, he said.

BBC Africa is hosting a Twitter Q&A with @SheLeadsAfrica (SLA) about helping women advance their careers ( see earlier post).

People have been contributing to the discussion with human resource expert Edleen B Elba from Sierre Leone:

Quote Message: It takes a certain level of fearlessness. Be committed to your vision. Imperative to use resources, find support from Ekua Armah

It takes a certain level of fearlessness. Be committed to your vision. Imperative to use resources, find support

Quote Message: Also by constantly experimenting on my ideas, I found better ways to go from idea to fruition." from Elizabeth Laiza King

Also by constantly experimenting on my ideas, I found better ways to go from idea to fruition."

Quote Message: Find someone to bounce ideas off - family, friend, colleague, mentor." from Edleen B. Elba ‏

Find someone to bounce ideas off - family, friend, colleague, mentor."

Quote Message: Work with those you aspire to be like - even if you are earning only a shilling at first." from Maria T. Ade

Work with those you aspire to be like - even if you are earning only a shilling at first."

People are reacting with amazement on Twitter to Ethiopian Almaz Ayana claiming Africa’s first gold medal at the Rio Olympics and breaking a world record:   

APCopyright: AP

Records, as the sporting cliche goes, are there to be broken, but while Simone Manuel's Olympic record time in the women's 100m freestyle final will eventually be surpassed, she achieved a first that no-one can take away.

Touching home at the end of a remarkable race, Manuel became the first black female swimmer to win an Olympic gold. She said she hoped her victory would encourage greater diversity in her sport.

She said: 

Quote Message: This medal is not just for me, it's for some of the African-Americans who have been before me and been inspirations.

This medal is not just for me, it's for some of the African-Americans who have been before me and been inspirations.

Quote Message: I hope I can be an inspiration for others. This medal is for the people who come behind me and get into the sport."

I hope I can be an inspiration for others. This medal is for the people who come behind me and get into the sport."

Read the full BBC story here

Nigerian table tennis player Segun Toriola is competing at his seventh Olympic Games - an African record.

He made his Olympic debut in Barcelona in 1992.

South Africa's Lee-Ann Presse and Kate Christowitz failed to clinch a medal in the final of the women's pairs in rowing as they finished fifth out of six.

Gold was won by Great Britain’s Helen Glover and Heather Stanning as they defended their Olympic title. 

New Zealand’s Genevieve Behrent and Rebecca Scown took silver and the bronze went to Denmark’s Hedvig Rasmussen and Anne Andersen.

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Doctors in East Africa are to be offered specialist training in the UK to give them the skills to detect cancer early. 

The scheme, which is funded by the East Africa Development Bank, aims to tackle the rising number of cases in the region. 

In Kenya alone, about 28,000 are diagnosed with cancer every year - with many at a late stage. 

About 600 doctors will be eligible for the training. They'll be selected from government hospitals that are away from urban centres. 

Many cancer patients in East Africa have to travel abroad due to the lack of the necessary expertise, technologies or drugs. 

The programme was designed by the governments of Kenya, Uganda, Tanzania and Rwanda, the British and Royal School of Physicians.

South Africa's James Thompson and John Smith just missed out on a medal in the final of the lightweight men's double skulls (average weight of the crew has to be a maximum of 70kg) as they finished fourth. 

The South Africans were part of the lightweight four that won Olmypic gold in 2012. The race was won by France’s Pierre Houin and Jeremie Azou, the Republic of Ireland brothers Gary and Paul O’Donovan took silver while it was bronze Norway’s Kristoffer Brun and Are Strandli.

South Africa's Kirsten McCann and Ursula Grobler faded in the final of the Lightweight women's double skulls  (average weight of the crew has to be a maximum of 57kg) and eventually finished fifth. 

It was won by Netherlands crew of Ilse Paulis and Maaike Head, silver went to Canada Lindsay Jennerich and Patricia Obee with China’s China Huang Wenyi and Pan Feihong taking bronze.

The UN refugee agency says about 110,000 people have fled to Uganda from South Sudan this year. 

It said three-quarters of them had arrived since the renewed outbreak of fighting last month.

 Uganda is struggling to cope. In some cases, reception centres are accommodating five times more people than they were originally built for. 

The UN said South Sudan's economic problems, with inflation running at 600%, were adding to the crisis.

ReutersCopyright: Reuters

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Just when Africa was about to mark two years without a case of the wild polio virus, the debilitating disease is reported to have returned, this time in Borno State, north-eastern Nigeria.

The disappointment was immediately clear.

The Nigerian Health Minister Isaac Adewole described the discovery of two new cases as a setback.

WHO's Regional Director for Africa Matshidiso Moeti said she was deeply saddened.

But how could the virus have "disappeared" for two years before re-emerging?

WHO said there was a possible low-level transmission during that period.

But as long as children are vaccinated there is a good chance of it stopping the spread.

Read: Nigeria to start emergency polio campaign