Rep. George Santos said he is “innocent” in response to questions about his alleged involvement in a 2017 credit card skimming operation, CNN reported on Friday.

Santos, who also goes by Anthony Devolder, told reporters on Capitol Hill he “never did anything of criminal activity” and that he had “no mastermind event,” CNN reports.

Santos’ comments come after POLITICO exclusively reported that his former roommate, Gustavo Ribeiro Trelha, claimed Santos oversaw the credit card operation. Trelha, who was convicted of the 2017 crime and was deported to Brazil, sent a sworn declaration to federal authorities on Wednesday detailing Santos’ alleged role.