Former Trump adviser Stephen K. Bannon was rightfully convicted of contempt of Congress for refusing to testify in front of the committee that investigated the Jan. 6, 2021, Capitol attack, an appellate court ruled Friday.

The three-judge panel did not immediately order Bannon to begin serving his four-month prison sentence. Instead, he can appeal to the full U.S. Court of Appeals for the D.C. Circuit. Bannon’s attorney David Schoen said he plans to do so.