A South African constitutional expert is tweeting about the arguments at the Constitutional Court.

We've heard the case from the lawyer for the Economic Freedom Fighters, now it's the turn of the Anton Katz who is arguing the case for the Democratic Alliance.

The opposition parties have brought the case to the Constitutional Court.

A disgruntled gambler has been stoned to death by fellow players at a Kenyan casino in the capital, Nairobi, after he killed two of its employees. 

The Tanzanian man lost his temper when the casino refused to advance him money to try to win back the $300 he had lost. 

He left the building but came back with a dagger and stabbed first the manager who had refused him, then a member of the casino's security. 

He was chased away by fellow gamblers who killed him in a nearby street. 

Image source, Getty Images

The BBC's Milton Nkosi is outside the Constitutional Court in Johannesburg, where a hearing is taking place on whether President Zuma should pay back some of the money spent on upgrading his private residence.

He has snapped supporters from the Cope opposition party.

The case is being seen as a test of the strength of the constitution and presidential accountability.

A South African photographer has also snapped this picture of Democratic Alliance supporters: 

Image source, Getty Images

Kenya could pull out of this summer's Rio Olympics if the Zika virus in Brazil reaches "epidemic levels", says the head of Kenya's Olympic committee.

The outbreak of the mosquito-borne disease in South America is being linked to severe birth defects.

Last week the World Health Organization (WHO) declared the virus a global public health emergency.

Kipchoge Keino said: "We are not going to risk taking Kenyans there if this Zika virus reaches epidemic levels."

Read the full story on BBC sport

Watch: Inside the Ugandan forest where virus was first found

Image source, reut

We have taken a look at President Jacob Zuma's controversial Nkandla residence which the country's ombudsman says he should repay some of the $23m (£13.8m) of taxpayers' money paid to upgrade it. 

 See how his residence in KwaZulu-Natal has grown:

A South African news service has tweeted a short film of Democratic Alliance (DA) supporters in Johannesburg today.

The DA, along with the Economic Freedom Fighters, brought the case on who should pay for improvements to President Jacob Zuma's private home, to the Constitutional Court.  

South Africa has a history of spending public money to upgrade its leaders' private residences:

Image source, AFP

• PW Botha: $16,100
• FW de Klerk: $22,000
• Nelson Mandela: $2.9m on two residences
• Thabo Mbeki: $1.1m
• Jacob Zuma: $23m on rural Nkandla residence

All figures in 2013 financial terms

Source: Public Protector report

The leaders of the Economic Freedom Fighters - one of the South African opposition parties which has taken the case about President Zuma's private home to the Constitutional Court - are getting ready for a protest march to the court.

A South African News channel has tweeted a picture of the leadership including Julius Malema (centre).

A South African constitutional expert has been tweeting updates on what's being said at the Constitutional Court.

Lawyer Wim Trengrove is outlining the case on why the president should be obliged to listen to the Public Protector (PP):  

South Africa's Public Protector Thuli Madonsela says she hopes the Constitutional Court decision will bring an end to the dispute.

She spoke to the BBC's Karen Allen ahead of the start of the court hearing:

Milton Nkosi
BBC Africa, Johannesburg

Even though President Jacob Zuma has now offered to repay the money, the opposition Economic Freedom Fighters (EFF) and Democratic Alliance insisted on pressing ahead with the case.

It is not that they do not want the president to pay, they do.

But they want to set a precedent by reinforcing the powers of the Public Protector, the corruption watchdog office set up under the country's constitution.

Mr Zuma had justified his reluctance to repay the state by reducing the Public Protector Thuli Madonsela's findings to mere recommendations and said they were not equal to orders given by a court of law.

The EFF smells blood - it hopes the Constitutional Court will conclude that the president contravened the constitution and therefore violated his oath of office.

The opposition would then no doubt demand the president's impeachment.

Image source, Reuters

A South African news channel is tweeting the opening argument from lawyer Wim Trengrove who is laying out the case against President Jacob Zuma, saying he should have complied with a report from the public protector (PP):

As the lawyers are outlining their case inside the Constitutional Court in Johannesburg, there are protests taking place outside.

One South African news channel is tweeting pictures of the Economic Freedom Fighters (EFF) supporters marching towards the court.

The EFF is one of the parties which brought the case.

Karen Allen
BBC Southern Africa correspondent, Johannesburg

Image source, AFP

South Africa's Constitutional court is now hearing a case on whether President Jacob Zuma should pay back some of the millions of dollars of taxpayers money spent on refurbishing his private home. 

It is also being asked by two opposition parties to rule on the independence of the public protector, after her report into the matter was ignored by parliament. 

Although the president announced last week that he was prepared to pay a contribution, this is being seen by his political opponents as too little too late. 

More than $23m (£15m) of upgrades, including a swimming pool, animal pen and amphitheatre, were undertaken at the taxpayers expense in a saga which is widely considered a national embarrassment. 

An inquiry by an independent watchdog, the public protector, in 2014 concluded Mr Zuma had benefited unduly and should pay a reasonable amount back, but until last week that demand has been ignored. 

Although the president himself has been cleared by the police of any wrongdoing, the case before the Constitutional Court is as much about the role of parliament in holding the executive to account as it is about skewed priorities and cronyism.

Today’s African proverb: 

Click here to contribute your wise words

Welcome to the BBC Africa Live page where we'll be keeping you up-to-date with news developments on the continent, including the court hearing into whether South Africa's President Jacob Zuma is obliged to pay back money spent on improvements to his rural home.