By Sam TobinLONDON (Reuters) - Madagascan President Andry Rajoelina's ex-chief of staff offered to use her influence to obtain bribes from precious stone miner Gemfields in exchange for help with lucrative mining rights, prosecutors told a London court on Tuesday. Romy Andrianarisoa, 47, is accused of seeking substantial payments from Gemfields between 2021 and 2023 to help the company expand its business into Madagascar. Prosecutor Alex Leach told jurors at Southwark Crown Court that Andrianarisoa was, at the time of the alleged offending, a "trusted adviser" to Rajoelina. At the meeting, Andrianarisoa "made it clear she had direct influence on the president", Leach added. He said Gemfields later approached Britain's National Crime Agency (NCA) after it became clear Andrianarisoa and her associate Philippe Tabuteau were seeking a bribe.

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Persons: Sam Tobin LONDON, Andry Rajoelina's, Romy Andrianarisoa, Andrianarisoa, Alex Leach, Leach, Sean Gilbertson, Gemfields, Britain's, Philippe Tabuteau, Tabuteau, Sam Tobin, Bernadette Baum Organizations: Southwark Crown, Crime Agency, NCA, Gemfields Locations: London, Gemfields, Madagascar, Southwark, Tabuteau