The federal charges could carry the possibility of the death penalty, while the maximum sentence for the state charges is ...

Before his initial appearance in New York’s state’s trial court, federal prosecutors also charged Mangione in the killing of ...

Mangione is accused of gunning down Thompson as he walked to an investor conference in Midtown Manhattan on Dec. 4.

Luigi Mangione pleaded not guilty Monday to state charges in the murder of UnitedHealthcare CEO Brian Thompson.

Luigi Mangione, the suspect in the fatal shooting of UnitedHealthcare CEO Brian Thompson on a busy sidewalk in Midtown ...

A suspect is in custody after the incident on an F train in Brooklyn on Sunday morning. Officers found a woman 'fully ...

Mangione's hearing on state charges comes days after his dramatic return to New York to face federal counts in the slaying of Brian Thompson.

The Ivy League-educated suspect is accused of gunning down UnitedHealthcare CEO Brian  Thompson on a Midtown Manhattan sidewalk.

The suspected killer of UnitedHealthcare CEO Brian Thompson is facing 11 counts and could be sentenced to life in prison if ...