Charges have been laid in French Polynesia against the director of the Socredo Bank, James Estall.
He had been questioned for more than 24 hours last week and is now facing charges of money laundering following investigations of the OPT affair which has seen several people being detained for months.
A public notary, who had been taken in for questioning last week, has been charged with complicity to corruption over property deals involving the veteran politician, Gaston Flosse.
Mr Flosse has also been charged over the OPT affair and will again be questioned this week but he cannot be detained because he has parliamentary immunity as French senator.
Another key suspect in the OPT affair, Michel Yonker, was released from the Tahiti jail after being held for six months as part of the inquiries into allegations that large sums of money were given to Mr Flosse's party as kickbacks for public sector contracts.