The French Polynesian president, Oscar Temaru, has lodged a complaint against unknown persons for alleged espionage and intrusion into his private life.
The complaint has been lodged by his lawyer, Stanley Cross, who has joined the action.
It comes after a police probe into the disappearance of a journalist confirmed the existence of an illegal intelligence service run by the former president, Gaston Flosse.
The investigation found that within the presidential intervention group, the GIP, an intelligence unit was tasked with the surveillance of rival politicians and other individuals.
The unit's staff reportedly included former French military intelligence officers who reported to Mr Flosse.
The revelations come three months after the family of the missing journalist, Jean-Pascal Couraud, lodged a complaint for murder against unknown persons.