The U.S. Department of Justice is carrying out a criminal investigation into UnitedHealth Group for possible Medicare fraud, the Wall Street Journal reported on Wednesday.

The Justice Department is investigating UnitedHealth Group for possible criminal Medicare fraud, people familiar with the matter said. The healthcare-fraud unit of the Justice Department’s criminal division is overseeing the investigation,

Insurance giant UnitedHealth Group is facing a criminal investigation by the US Justice Department for possible Medicare fraud, the Wall Street Journal reported Wednesday.