Pharmacy giant Walgreens has agreed to pay up to $350 million in a settlement with the U.S. Department of Justice, which had issued a claim over opioid prescriptions.

Walgreens has agreed to pay as much as $350 million to settle illegally filled prescriptions for addictive opioid drugs and false reimbursement claims to the federal government, the Justice Department announced Monday.

Walgreens has agreed to pay up to $350 million in a settlement with the U.S. Department of Justice, which said that it illegally filling millions of prescriptions in the last decade for opioids and other controlled substances.