Lawyers representing lottery players have lodged a civil suit against former Illinois lottery operator Northstar Lottery Group for alleged manipulation of winning tickets.

Belleville News Democrat reported that the attorneys have accused Northstar of defrauding businesses that sold scratch-off tickets and the lottery customers by manipulating the number of winning tickets available for purchase, among other things.

To prevent players from hitting the jackpot with large payouts, they alleged that Northstar intentionally discontinues scratch-off games before tickets are sold.

The lawsuit, which was filed on Monday in southern Illinois’ St. Clair County, didn’t state how much compensatory damages they were seeking from the lottery firm, according to the report.