KANSAS CITY, Mo. (AP) — An independent auditor will act as a “baby sitter,” performing random price checks at Walgreen Co. stores around Missouri for the next three years under an agreement the company reached with the state, Missouri Attorney General Chris Koster said Wednesday.

Under the agreement, Walgreen will pay for the audit inspections of at least 25 percent of its Missouri’s stores each quarter for the next three years, Koster said. The announcement comes less than a year after Missouri filed a lawsuit in Jackson County accusing the Chicago-based drugstore chain of deceptive pricing.