Luigi Mangione has pleaded not guilty in the December 4th shooting death of United Healthcare CEO Brian Thompson. Mangione voiced that not guilty plea to a judge Monday inside a New York City courtroom.

Luigi Mangione was charged in a four-count federal indictment that could land him the death penalty if convicted of murder.

A grinning Luigi Mangione appeared to yuk it up in a Manhattan courtroom Monday as he entered a plea in the murder of UnitedHealthcare CEO Brian Thompson.

Luigi Mangione was officially indicted on three counts of murder, as well as multiple weapons charges, in connection to the killing of Brian Thompson.

After Luigi Mangione's arrest for allegedly killing UnitedHealthcare CEO Brian Thompson, things have been quite interesting on social media.

Mangione, 26, is expected to be turned over to the NYPD by federal agents in the morning and brought into state court for his arraignment on murder charges.

Luigi Mangione is being detained in Pennsylvania after being found with a gun consistent with the one used by kill UnitedHealthcare CEO Brian Thompson.

Luigi Mangione has been indicted for first-degree murder just weeks after the fatal shooting of UnitedHealthcare CEO Brian Thompson.

A New York grand jury has charged Mangione, 26, with first- and second-degree murder charges and other related charges for the cold-blooded slaying of the 50-year-old CEO outside a Midtown hotel