Luigi Mangione pleads not guilty to murdering healthcare CEO

The suspect accused of killing UnitedHealthCare CEO Brian Thompson has pleaded not guilty to New York state murder and terrorism charges.

Luigi Mangione, 26, appeared in court on Monday to be arraigned on 11 state criminal counts, including murder a crime of terrorism.

He also faces with federal stalking and murder charges that could lead to a death penalty sentence.

Prosecutors allege that Mangione shot Thompson in central Manhattan before going on the run. Authorities later arrested him at a McDonald's in Pennsylvania.

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