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

The settlement resolves accusations of Walgreens filling invalid prescriptions and seeking reimbursement from federal health programs.

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.