The UnitedHealth Group leader whose murder in December unleashed a torrent of public frustration and dissatisfaction with the U.S. health care system was pushing for some of the very improvements that critics have been seeking.

In his first public comments since one of his executives was shot to death, UnitedHealth Group CEO Andrew Witty said the healthcare system “needs to function better.”

Click in for more news from The Hill{beacon} Health Care Health Care   The Big Story UnitedHealth CEO blames drug companies for high costsIn his first public remarks since the murder of

The CEO of UnitedHealth Group defended the company's role in the U.S. health care system days after a report said the company made huge profits by significantly marking up the cost of lifesaving drugs.

After reporting weaker than expected results for the company’s insurance division, UnitedHealth CEO’s said his company was not to blame for the high cost of healthcare in the U.S.