One of French Polynesia's leading business leaders, Albert Moux, has been detained for questioning as part of a long-running corruption probe.
Mr Moux is the head of the company, Pacific Petroleum.
The investigation centres on a New Caledonian businessman, Bill Ravel, who last year was jailed for two months in Tahiti as part of the probe.
The case initially focussed on allegations that Mr Ravel paid the secretary general of the confederation of independent unions, Cyril Legayic, 160,000 US dollars in cash over four years to contain strikes at his companies in Papeete.
The affair has also engulfed a raft of officials and politicians, including a government minister, James Salmon.
The case has not yet gone to court.