Luigi Mangione: CEO murder suspect's "fans" want in on hearing | LiveNOW from FOX

The man accused of fatally shooting the CEO of UnitedHealthcare pleaded not guilty on Monday to state murder and terror charges while his attorney complained that comments coming from New York’s mayor would make it tough to receive a fair trial.

Luigi Mangione, 26, was shackled and seated in a Manhattan court when he leaned over to a microphone to enter his plea. The Manhattan district attorney charged him last week with multiple counts of murder, including murder as an act of terrorism.

Mangione’s initial appearance in New York’s state trial court was preempted by federal prosecutors bringing their own charges over the shooting. The federal charges could carry the possibility of the death penalty, while the maximum sentence for the state charges is life in prison without parole.

Prosecutors have said the two cases will proceed on parallel tracks, with the state charges expected to go to trial first.

Mangione is accused of fatally shooting UnitedHealthcare CEO, Brian Thompson outside of his Midtown Manhattan hotel on Dec. 4. He was later arrested days later at a McDonald's in Altoona, Pennsylvania.

Herb Subin, lead trial attorney at Subin and Associates joined LiveNOW from FOX's Josh Breslow to discuss what's next in the case.

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