(FILES) In this file photo taken on June 18, 2019 Tunisian presidential candidate Nabil Karoui is pictured during an interview with AFP at his office in Tunis. - Karoui is to remain in prison after an appeal was turned down Friday, just two days ahead of the poll, his party said. He was arrested on money laundering charges on August 23, but the electoral commission has allowed him to compete in the September 15 poll. (Photo by FETHI BELAID / AFP)