Texas Gov. Greg Abbott has directed the Texas Rangers to investigate two controversial lottery jackpots amid growing scrutiny over the role of online ticketing firms in the state.

The Texas Lottery Commission’s executive director said Monday he would move to ban couriers from buying lottery tickets after finding that state law bars the practice, an about-face from the agency’s yearslong claim it had no control over such third-party sales.

Courier services take orders online or through an app, purchase lottery tickets from a retailer and send a scanned copy to the buyer.