Federal prosecutors said Wednesday that they might bring additional charges against New York City Mayor Eric Adams and indict others in the corruption case against him.

Prosecutors made the disclosure as Adams appeared in court for a hearing days after he was indicted on charges that he accepted about $100,000 worth of free or deeply discounted international flights, hotel stays, meals and entertainment from foreign interests, and obtained illegal campaign contributions. The allegations span nearly a decade, dating to when Adams was Brooklyn’s borough president.

Prosecutors say the travel perks were arranged by a senior Turkish diplomatic official in New York and Turkish businesspeople who wanted to gain influence with Adams. The indictment alleges that Adams, a Democrat, also conspired to receive monetary donations to his political campaigns through straw donors from foreign sources who weren’t allowed to give money to U.S. political candidates.