The Federal Trade Commission sued PepsiCo on Friday, alleging that it has engaged in illegal price discrimination by giving unfair price advantages to one large retailer at the expense of other vendors and consumers.

Outgoing agency Chair Lina Khan has filed a raft of measures during her last week in office.

The agency claims the soda giant gave “unfair” pricing advantages to a larger retailer, forcing consumers to pay more at competing stores. Pepsi “strongly disputes” the allegations.