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,

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.

UnitedHealth Group is being investigated by the Justice Department for possible Medicare Fraud, according to a report. The healthcare-fraud unit of the Justice Department’s criminal division is overseeing the investigation, which has been ongoing since last summer, sources told The Wall Street Journal.