French financial prosecutors have opened an investigation after an anti-corruption association filed a complaint against French President Emmanuel Macron's chief of staff.
The prosecutors' office said investigators will look into whether the rules related to conflicts of interest while in a public position have been respected.
The French association Anticor suspects Alexis Kohler, one of Mr Macron's closest aides, of influence-peddling and conflict of interest in relation to his ties to the Mediterranean Shipping Company (MSC).
Mr Kohler has family links to the Geneva-based cruise company.
He worked as a senior official in the finance ministry from 2014 to 2016.
Mr Kohler then became chief financial officer at MSC.
He joined Mr Macron's team following the May 2017 presidential election.