❓WHAT HAPPENED: A Minnesota man was arrested for allegedly impersonating a Federal Bureau of Investigation (FBI) agent and attempting to free murder suspect Luigi Mangione.
👤WHO WAS INVOLVED: Mark Anderson, 36, of Mankato, Minnesota; Luigi Mangione, accused of assassinating UnitedHealthcare CEO Brian Thompson; and FBI agents.
📍WHEN & WHERE: Anderson was arrested at the Metropolitan Detention Center in Brooklyn on January 28, 2026.
💬KEY QUOTE: “Anderson also displayed and threw at the BOP officers numerous documents,” an FBI agent wrote in the complaint, adding: “I have reviewed those papers and they appear to be related to filing of claims against the United States Department of Justice.”
🎯IMPACT: Anderson faces charges of impersonating an FBI agent, while Mangione remains in custody as both state and federal prosecutors push forward with murder and related charges.
Mark Anderson, a 36-year-old man from Mankato, Minnesota, was arrested at the Metropolitan Detention Center in Brooklyn on Wednesday evening after allegedly impersonating a Federal Bureau of Investigation (FBI) agent. Anderson claimed he had a court order to release Luigi Mangione, who is accused of assassinating UnitedHealthcare CEO Brian Thompson. According to the criminal complaint, Anderson presented a Minnesota driver’s license when asked for credentials and carried a bag containing a barbecue fork and a pizza cutter.
“Anderson also displayed and threw at the BOP officers numerous documents,” an FBI agent wrote in the federal criminal complaint, adding: “I have reviewed those papers and they appear to be related to filing of claims against the United States Department of Justice.” The 36-year-old Minnesotan is charged with impersonating a federal agent and is set to appear in Brooklyn federal court.
Luigi Mangione, a 27-year-old accused of stalking and fatally shooting Brian Thompson on December 4, 2024, outside a Manhattan hotel, remains in custody without bail. Mangione was arrested five days after the incident at a McDonald’s in Altoona, Pennsylvania. He has pleaded not guilty to both state and federal charges.
Federal prosecutors are seeking the death penalty for Mangione if convicted, with a judge expected to rule soon on whether the death penalty will be pursued. Meanwhile, state prosecutors in Manhattan are aiming to set Mangione’s murder trial for July 2026, ahead of a separate federal case where jury selection is scheduled to begin in September.
The National Pulse reported last October that Mangione has reportedly built up a $40,000 commissary balance while in custody. The money, according to a jailhouse source, has come largely from his leftist supporters. Additionally, sources say Mangione receives between 100 to 200 letters a day, many of them reportedly from women expressing romantic interest. One letter writer allegedly expressed a desire to “bug out on his d**k.”
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