A man from Minnesota took justice into his own hands by impersonating an FBI agent to attempt in an attempt to release Luigi Mangione, who is currently in prison on murder charges in connection with the fatal shooting of UnitedHealthcare CEO Brian Thompson. The man was arrested and charged accordingly for his failed attempts to release the inmate.
Man Attempts Jailbreak
Authorities identified the man as 36-year-old Mark Anderson. On Wednesday evening, he arrived at the Metropolitan Detention Center in Brooklyn, New York, claiming to be an FBI agent with a court order to release Mangione. According to the criminal complaint filed Thursday, the Bureau of Prisons officials asked for Anderson’s credentials, and he provided a Minnesota driver’s license. He also allegedly claimed to have weapons on his person.
Afterward, he allegedly threw paperwork at the officers. “Anderson also displayed and threw at [Bureau of Prisons] officers numerous documents,” the complaint states. “They appear to be related to filing claims against the United States Department of Justice.” The officers searched his backpack and found a barbecue-style fork and a circular steel blade, resembling a pizza cutter.
According to law enforcement officials, Anderson had traveled to New York for a potential job, but when that did not work out, he got a job at a pizzeria. It is unclear if he has any connection to Mangione, and if so, what.
He was charged with one count of falsely pretending to be a U.S. government officer and was scheduled to appear in Brooklyn’s federal court on Thursday afternoon. The magistrate judge found him to be a flight risk and ordered that he be detained pending future proceedings. His court-appointed public defender has not commented on the situation.
Possible Death Sentence
Mangione, 27, has been in federal custody since his arrest in December 2024 after UnitedHealthcare’s CEO Brian Thompson was gunned down and murdered outside of a hotel in Manhattan. He has pleaded not guilty to both federal and state murder charges, and if convicted, he could face the death penalty.
Mangione’s attorneys are working tirelessly to ensure the harshest criminal punishment is removed from the case after U.S. Attorney General Pam Bondi announced the government would seek the death penalty for “an act of political violence” and a “premeditated, cold-blooded assassination that shocked America.”
Federal prosecutors argued that Mangione is a threat to the public, even though he has a significant number of supporters who praise him and his alleged actions. They contend he is trying to influence others to follow in his footsteps.
“Simply put, the defendant hoped to normalize the use of violence to achieve ideological or political objectives,” they wrote in an August filing. “Since the murder, certain quarters of the public — who openly identify as acolytes of the defendant — have increasingly begun to view violence as an acceptable, or even necessary, substitute for reasoned political disagreement.”
Federal and State Trials
Judge Margaret Garnett, who is overseeing the pretrial proceedings and the trial, announced Mangione’s federal trial will begin with jury selection on September 8, 2026. Opening statements still depend on the judge’s decision on whether the Justice Department can pursue the death penalty. She is expected to decide by Friday.
The Manhattan District Attorney’s office also requested that the judge overseeing the state case begin the state trial in July, only two months before the federal trial. Assistant District Attorney Joel Seidemann rationalized the request, stating the murder took place in Manhattan. The investigation was led by the New York Police Department and the state’s office, and the state indictment was issued before the federal complaint was filed.
“The State has an overriding interest in trying this defendant for the cold-blooded execution of Brian Thompson on December 4, 2024. It resulted in the tragic death of a guest to our city on our streets,” Seidemann wrote. “Federal law supports our request that we proceed first, and our right to a speedy resolution of this case would be severely compromised should the federal trial proceed first.”
Mangione’s attorney, Karen Friedman Agnifilo, admitted they will need to prepare for the federal trial, insinuating they would be fine with the state trial proceeding first.

