Documents released by a Brazilian court have outlined the alleged use of Swiss bank accounts for the payment of bribes in the Petrobras scandal.

Pedro Barusco, a former Petrobras executive and key witness in what is emerging as Brazil’s biggest graft case, said in a statement filed with a court in Parana that he laundered an estimated $100m in bribes partly through a web of accounts in several banks in Switzerland.

These include Bank Safra, where he claimed to have opened several accounts “with the help of” Julio Faerman, a Brazil-based oil and gas industry consultant, and Denise Kos, a former official at the bank.

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