The commodity trading company Trafigura and three executives are on trial for alleged corruption.
The case is underway at the Federal Criminal Court in Bellinzona.
One of the defendants, 51-year-old Michael Wainwright, was the chief operating officer at the time of the alleged offence.
The other two are a former Angolan official and an ex-Trafigura employee.
Prosecutors allege over 4 million euro as well as 600,000 US dollars was sent to the Angolan official in exchange for oil and shipping contracts.
Lawyers for the company says it will defend itself against the charges, and Michael Wainwright’s lawyer says he will be putting up a robust defence and is certain the court will dismiss the case.
The trial continues.
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