Kenya’s Finance Minister Henry Rotich surrendered himself to investigators on Monday, moments after the Director of Public Prosecution ordered his arrest.
According to Nairobi News, Mr Rotich was driven to the headquarters of the Directorate of Criminal Investigations and is expected to be questioned about payments related to the building of two dams in the country.
He is accused of flouting procurement procedures in awarding a contract worth over $450m (£405m) for the dam projects to the Italian company CMC de Ravenna.
In March Mr Rotich denied any wrongdoing in a large newspaper advert. The company has also denied the accusations.
The Director of Public Prosecutions, Noordin Haji, also ordered the arrest of more than 20 other people accused of being involved in the contract, including other top officials and the directors of the Italian firm.