Luigi Mangione, accused of killing UnitedHealthcare CEO Brian Thompson in Manhattan on Dec. 4, pleaded not guilty Monday morning in Manhattan criminal court.
Mangione, 26, was charged with 11 state charges, including first-degree murder, second-degree murder as a crime of terrorism, and multiple weapons charges. If convicted of the most serious charges, he could be sentenced to life in prison without parole.
The charges include one count of first-degree murder, a Class AI felony. Two counts of second-degree murder, class AI felonies. two counts of second-degree criminal possession of a weapon, a Class C felony; four counts of third-degree criminal possession of a weapon, a class D felony; one count of fourth-degree criminal possession of a weapon, a class E felony; One count of second-degree criminal possession of a forged instrument, a class D felony.
Mr. Mangione will remain in federal custody until a transfer is decided between state and federal authorities. The next court date was scheduled for February 21st.
Killing of United Healthcare CEO: Death penalty under consideration for federal indictment of Luigi Mangione
Luigi Mangione enters a New York City criminal courtroom Monday, Dec. 23, 2024. Mangione is facing state charges for the murder of UnitedHealthcare CEO Brian Thompson earlier this month. (Rashid Umar Abbasi, Fox News Digital)
New York prosecutors claim Mr. Mangione was planning to fly to New York. They find and kill Thompson, a Minnesota resident who was in town to attend United Healthcare's annual shareholder meeting. Mangione allegedly shot Thompson in the back with a 3D-printed ghost gun and suppressor.

Luigi Mangione enters a New York City criminal courtroom Monday, Dec. 23, 2024. Mangione is facing state charges for the murder of UnitedHealthcare CEO Brian Thompson earlier this month. (Rashid Umar Abbasi, Fox News Digital)
Thompson was appointed to United Healthcare CEO He is survived by his wife, Paulette “Paulie” Thompson, 51, and two children.
Prosecutors said Mangione fled New York City within an hour of the crime. I traveled to Altoona, Pennsylvania.
Five days later, on Dec. 9, Altoona police arrested Mangione inside a McDonald's after receiving a tip from an employee. The suspect provided false identification to local police and appeared shaken when asked if he had been in New York recently, police said.

Attorney Karen Friedman Agnifilo arrives at New York City Criminal Court for Luigi Mangione's arraignment on Monday, December 23, 2024. Mr. Agnifilo is representing Mr. Mangione, who is facing state charges for the murder of UnitedHealthcare CEO Brian Thompson earlier this month. (Rashid Umar Abbasi, Fox News Digital)
Authorities also found a handwritten manifesto criticizing the medical industry. NYPD Chief of Detectives Joseph Kenney He previously told Fox News. The manifesto specifically mentioned United Healthcare.
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Officials have not commented on an official motive, but the public speculates that the suspect had strong grievances with both the medical and insurance industries.
FOX News' Maria Palonich and Audrey Conklin contributed to this report.
