Walgreens has agreed to pay $106 million to settle lawsuits that alleged the pharmacy chain submitted false payment claims with government health care programs for prescriptions that were never dispensed.

The settlement announced on Friday resolves lawsuits filed in New Mexico, Texas and Florida on behalf of three people who had worked in Walgreens’ pharmacy operation. The lawsuits were filed under a whistleblower provision of the False Claims Act that lets private parties file case on behalf of the United States government and share in the recovery of money, the U.S. Justice Department said. The pharmacy chain was accused of submitting false payment claims to Medicare, Medicaid and other federal health care programs between 2009 and 2020 for prescriptions that were processed but never picked up.

In a statement, Walgreens said that because of a software error, the chain inadvertently billed some government programs for a relatively small number of prescriptions that patients submitted but never picked up.