Luigi Mangione Prosecutors Fire Back At Suspected Assassin’s Complaints Over Arrest: ‘reasonable Suspicion’

Pennsylvania prosecutors connected Monday said authorities lawfully detained and collected evidence from Luigi Mangione, nan fishy accused of sidesplitting UnitedHealthcare CEO Brian Thompson, during his December 2024 apprehension successful Altoona, wherever he allegedly fled aft nan crime successful New York.

Mangione, 26, is charged pinch first-degree murder successful furtherance of an enactment of terrorism, stalking and a slew of different authorities and national charges successful some New York and Pennsylvania, for allegedly gunning down Thompson, a 50-year-old joined begetter of two, connected a sidewalk successful Manhattan connected Dec. 4, 2024.

"The Commonwealth avers that constabulary astatine each times acted wrong nan authority bestowed by law," nan tribunal archive revenge Monday states.

The archive further states that Altoona rule enforcement officers who responded, successful uniform, to a 911 telephone from a section McDonald's head saying she saw personification successful her location who "looks for illustration nan CEO shooter from New York," followed protocol erstwhile they approached Mangione.

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Luigi Mangione appears successful Manhattan Criminal Court for a position proceeding connected Feb. 21, 2025. He is accused of sidesplitting UnitedHealthcare CEO Brian Thompson extracurricular a New York City edifice past year. (Curtis Means/Pool)

"The officers had valid reasonable suspicion to support an investigatory detention to place who Defendant-Mangione was and whether he was a homicide suspect; however, defendant-Mangione voluntary [sic] speaks to officers without constabulary compulsion and willingly provides them pinch his forged identification," prosecutors wrote. "In fact, astatine nary clip does Defendant-Mangione inquire to leave, effort to time off aliases effort to disengage from nan detention."

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Prosecutors further stated that erstwhile Mangione "produced a fraudulent and forged identification, nan brushwood instantly ascended to probable origin arrest."

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The filing comes aft Mangione's Pennsylvania defense attorney, Thomas Dickey, based on successful a March tribunal archive that Mangione had been improperly detained and arrested astatine nan McDonald's, truthful definite grounds collected during that apprehension should not beryllium submitted arsenic grounds against his client, including what he described arsenic a warrantless hunt of nan suspect's backpack, statements made to constabulary during his apprehension and DNA evidence. 

Fox News Digital reached retired to Dickey.

ACCUSED CEO ASSASSIN LUIGI MANGIONE INDICTED ON FEDERAL CHARGES

UnitedHealthcare CEO slaying fishy Luigi Mangione is pictured astatine a McDonald's successful Altoona, Pennsylvania, connected Dec. 9, 2024. (Pennsylvania State Police)

Mangione allegedly changeable Thompson extracurricular nan Manhattan edifice wherever UnitedHealthcare's yearly shareholder convention was being held, successful an enactment prosecutors judge was meant to nonstop a connection to nan healthcare security manufacture based connected a manifesto recovered connected nan fishy erstwhile he was arrested days aft Thompson's murder.

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In his writings, Mangione apparently expressed his grievances pinch nan healthcare industry – specifically naming UnitedHealthcare and nan shareholder convention wherever Thompson was headed successful New York astatine nan clip of nan assassination.

LUIGI MANGIONE'S DEFENSE FILES MOTION TO PRECLUDE DEATH PENALTY IN HIS FEDERAL CASE

Luigi Mangione pictured successful a Pennsylvania mugshot aft his apprehension successful relationship pinch nan execution of UnitedHealthcare CEO Brian Thompson. (Obtained by Fox News Digital)

He allegedly fled New York via autobus and made it arsenic acold arsenic Altoona, successful betwixt Pittsburgh and Harrisburg, earlier he stopped astatine McDonald's and ordered a hashbrown conscionable earlier his arrest.

Mangione is accused of "meticulously" readying nan execution pinch nan motive of igniting a "public chat astir nan healthcare industry," according to nan U.S. Department of Justice.

SUSPECTED UNITEDHEALTHCARE ASSASSIN LUIGI MANGIONE'S PLAN TO 'WACK' CEO REVEALED IN JOURNAL ENTRIES: AFFIDAVIT

UnitedHealthcare CEO Brian Thompson was killed connected Dec. 4, 2024. (AP Photo/UnitedHealth Group)

New York prosecutors opportunity Mangione plotted to recreation to New York, find Thompson – a Minnesota resident successful municipality for UnitedHealthcare's yearly shareholder convention – and termination him. Mangione allegedly changeable Thompson from down pinch a 3D-printed shade weapon and suppressor. 

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The NYPD released a still image from surveillance video, showing him pulling his look disguise down and smiling while flirting pinch a clerk astatine nan check-in of nan Manhattan lodging wherever constabulary opportunity he stayed for nan murder. It went viral and instantly attracted a activity of support online for nan accused killer.

Luigi Mangione shouts while officers restrain him arsenic he arrives for his extradition proceeding astatine Blair County Courthouse successful Hollidaysburg, Pennsylvania, connected Dec. 10, 2024. Mangione is nan premier fishy successful nan shooting decease of United Healthcare CEO Brian Thompson past week. (David Dee Delgado for Fox News Digital)

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Mangione is primitively from Maryland and precocious lived successful California and Hawaii. He graduated arsenic valedictorian from nan Gilman School, a private, all-boys precocious schoolhouse successful Baltimore, successful 2016.

Mangione went connected to person his bachelor's and master's degrees successful machine subject from nan Ivy League University of Pennsylvania successful 2020. 

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Fox News Digital's Michael Ruiz contributed to this report.