MasterCard maybe stepping into some hot antitrust trouble with the European Union amid reports of anti-competitive behavior between its swipe fees on credit and debit cards, said a Bloomberg Report.

According to the article, regulators may issue a “statement of objectives” as part of its antitrust probe to the credit card giant toward the end of July. For decades, EU regulators have monitored swipe fees on credit and debit cards and agreed that it reflects anti-competitive practices.