The officials are facing charges of fraud and breaching public finance regulations linked to a 2015 procurement scandal.
South African prosecutors have arrested several former executives at public logistics company Transnet, which is at the centre of a high-profile investigation into corruption during Jacob Zuma’s tenure as president.
On Monday, South Africa’s National Prosecuting Authority (NPA) said Transnet’s former chief executive officer Brian Molefe and finance chief Anoj Singh were among four people held in connection with a multimillion-dollar corruption case.
“Several arrests of former Transnet executives have been effected this morning, through arrangement with their legal representatives,” the NPA said in a statement.
The arrested appeared before a court in Johannesburg on Monday and were granted 50,000 rand (about $3,000) bail.
An NPA spokesperson confirmed to the AFP news agency the executives are facing charges of fraud and breaching public finance regulations, linked to a 93 million rand ($5.5m at the current exchange rate) corruption and fraud case surrounding the 2015 procurement of more than 1,000 locomotives.
Transnet owns all of South Africa’s rail, ports and pipelines – the logistical backbone of the continent’s most advanced economy.
Lawyers for Molefe and Singh said their clients intended to plead not guilty.
A report into state corruption under Zuma published earlier this year described Transnet as a “primary site”.
The investigation led by Chief Justice Raymond Zondo found more than 41 billion rand ($2.42bn) in contracts had been “irregularly awarded for the benefit of entities linked to the Gupta family”, a business family of Indian migrants with close ties to Zuma.
The opposition Democratic Alliance party welcomed the arrests, saying it hoped it was the “beginning of justice”.
“While others have already been charged in this case, it seems that the last chickens have now finally come home to roost,” party’s senior lawmaker Glynnis Breytenbach said in a statement.