Transparency International Zimbabwe said the police, local councils and the education department were among the most corrupt.
The government of Buhari, elected last year on an anti-corruption platform, said it has recovered more than $500 million of missing state funds
The chairman of the ruling Unity Party, the parliamentary speaker and a former minister facing bribery charges, along with London-based Sable Mining.
The disruption was the latest in a series of showdowns in parliament as pressure mounts on Zuma to resign or be axed as president by the ruling ANC
Anti-corruption declarations won’t rid world of the age-old scourge, but states can do a lot to help
Real estate is one of the easiest ways to launder ill-gotten wealth. More than 100,000 properties in England and Wales are owned by foreign companies
“There are comrades who say Zuma must resign now and those who say we will die with him as a person. Both positions are wrong”
Return stolen assets, Buhari tells Cameron after UK premier said Nigeria one of 'most corrupt' nations in world
Buhari said corruption was a "hydra-headed monster" that was "endemic and systematic" in Nigeria
British PM tells Queen London summit will host the`fantastically corrupt', says Nigeria among the worst
Buhari writes that corruption became a "way of life" under "supposedly accountable democratic governments"
On Freedom Day, hundreds of people demonstrated in Johannesburg, Cape Town and Durban to demand Zuma step aside
UPDATE: Gupta brothers linked to Zuma scandal and 'state capture' didn't flee S. Africa for Dubai - official
The Gupta brothers have long been accused of wielding undue influence over President Zuma
Magufuli strikes again - cancels celebrations marking Tanzania's key Union Day to 'save money for road project'
He canned Independence Day and ordered the $2m set aside for the festivities be used to construct a 4.3 km road section in Dar es Salaam.
Zuma in trouble as South African top court rules he 'failed to uphold' constitution in renovation scandal
Under-pressure Zuma must personally repay the public funds spent on his rural home, judge says
The fight against graft would help address perception that governance had deteriorated in Tanzania in recent years
Two battered BRICS chiefs: Zuma and Brazil’s Rousseff united in misery as corruption threatens gains
Both countries have the capacity to recover from their crises, but the current leadership in Brazil and South Africa can’t do it
The judge set bail for each at the $15 million they are accused of stealing – they couldn’t pay and remain in custody
He admitted the economy was in trouble and called on private sector to help the country avoid a looming downgrade of its debt to junk status
The success of Kenya at Beijing was tarnished after Koki and Zakari failed drugs tests
Vieira is a nephew of former President Joao Bernardo Vieira, who was assassinated