The US company abruptly replaced its CEO this week. Read more at straitstimes.com. Read more at straitstimes.com.

Medicare practices sent the stock diving Thursday to a five-year low. The Justice Department is looking into potential Medicare fraud by the health insurer, according to a report by the Wall Street Journal,

UnitedHealth Group shares plunged 18% on Thursday as investors fled the stock after a Wall Street Journal report that the U.S. Department of Justice was carrying out a criminal investigation into the company for potential Medicare fraud.

The healthcare giant is under investigation for possible Medicare fraud, according to The Wall Street Journal.

The U.S. Justice Department is investigating UnitedHealth for possible criminal medical fraud. The investigation began as early as last summer and focuses on the Medicare Advantage business practices.

UnitedHealth Group shares fell nearly 6% in premarket trading on Thursday, after the Wall Street Journal reported that the U.S. Department of Justice was investigating the company for potential Medicare fraud.

UnitedHealth Group stock was sliding again Thursday as the market took in a report in the Wall Street Journal that the U.S. Department of Justice has launched a criminal fraud investigation of Medicare billing practices,

UnitedHealth Group stock fell early Thursday following a report that the Justice Department is investigating the company for possible Medicare fraud. The healthcare-fraud unit of the department is overseeing the investigation that has been ongoing since at least last summer,

UnitedHealth Group is being investigated for possible Medicare fraud, according to The Wall Street Journal, sending shares of the healthcare company sliding in after-hours trading just one day after its CEO,