Texas Lottery commissioner Clark Smith resigned on Friday after controversial lottery wins through third-party services.

Texas Lottery Commissioner Clark Smith resigned amid legislative scrutiny over the use of lottery couriers and after facing criticism for his knowledge of legal details in his role.

Smith’s resignation comes just over a week after he and several other Texas Lottery Commission officials were grilled at a state Senate Finance Committee hearing over couriers, which lawmakers worry might be allowing people to game the lottery system — potentially illegally.