Attorney General Kris Mayes filed a lawsuit Monday against several pharmacy benefit managers and drug manufacturers.

It alleges they schemed to inflate the price of insulin and other diabetes drugs in violation of the Arizona Consumer Fraud Act.

In a statement, Mayes said that for two decades, the price of insulin has increased “many times faster than prices for consumer goods and services.” She said it’s because pharmacy benefit managers and drug companies had a “secretive system of baseless price increases and kickbacks.”

Through the suit, her office is seeking for them to give up any profits made from that system, restitution for insulin overpayments, and additional penalties for unfair and deceptive practices.

Plus, Mayes wants the court to permanently bar the defendants from doing anything similar again.