Agencies of the federal government and state agencies typically investigate cases involving health care fraud. Examples include: state health care fraud prevention units, state Medicaid fraud control units, local Medicare & Medicaid services departments, a state’s attorney general’s office, the Department of Justice (DOJ) Healthcare Fraud Strike Force, the Department of Health and Human Services Office of Inspector General (HHS-OIG), the Federal Bureau of Investigation (FBI), and the Drug Enforcement Administration (DEA).