George Santos, a longtime U.S. House of Representatives member from Long Island, is facing a House ethics probe after House Minority Leader Kevin McCarthy confirmed the investigation on Tuesday. The probe follows recent reports of unusual campaign expenses, including a $199.99 payment to Santos’ longtime treasurer, and constituents’ calls for Santos’ resignation.

McCarthy said that the House Ethics Committee had begun its investigation into Santos’ actions and that the committee was taking the allegations “very seriously.”

Santos’ constituents have been vocal in their calls for his resignation, with some traveling to the capital to urge the House to take action.

The New York Post reported that Santos’ lies and unethical behavior are likely to hurt his constituents the most, as his actions have brought negative attention to the district.

The House Ethics Committee has yet to release any further details on the probe, but it is clear that Santos’ actions are under intense scrutiny.