The complaint alleges that the retail pharmacy filled prescriptions for controlled substances that lacked legitimate medical purpose or were not valid.

The U.S. Department of Justice announced a lawsuit on Wednesday accusing pharmacy chain CVS of filling illegal opioid prescriptions and billing federal health insurance programs, contributing to a nationwide epidemic of opioid addiction and overdose.

The Justice Department filed a civil lawsuit against CVS Pharmacy charging that the establishment became a "pill mill" for those illegally filling prescriptions for opioids without a legitimate medical reason.