Lev Parnas, an associate for Rudy Guiliani, was seen exiting Manhattan federal court Monday following a status hearing for a criminal finance case.
Parnas attended the hearing.
Fruman did not appear, though his lawyer did.
Ukraine-born Parnas and Belarus-born Igor Fruman, both living in Florida, were arrested in October on charges of illegally funneling money to a pro-Trump election committee and other politicians.
Both men have pleaded not guilty.
Federal prosecutors are examining payments made to Giuliani as part of an active criminal investigation, according to a grand jury subpoena seen by Reuters.
Giuliani has not been charged with a crime and has denied any wrongdoing.