A Turkish-born businessman tied to the criminal case against New York City Mayor Eric Adams plans to plead guilty to an illegal campaign contribution charge, federal prosecutors disclosed in a court filing.

Erdan Arkan, who was previously identified only as "Businessman-5" in the indictment against Adams, will be charged with conspiracy to commit wire fraud through the collection of straw-man campaign contributions, according to a letter filed Monday to two judges involved in the case.