Luigi Mangione, the man suspected of fatally gunning down UnitedHealth Group chief executive Brian Thompson on a Manhattan street, is due to be arraigned on Monday on state murder charges that brand him a terrorist.

The New York District Attorney’s office said a warrant for Mangione’s arrest had been issued and a complaint against him remained under seal in the state. In New York, he faces charges for murder, criminal possession of a weapon and possession of a forged document.

The suspect in the killing of UnitedHealth Group executive Brian Thompson was charged with federal murder and stalking crimes in a Manhattan courtroom on Thursday, alongside state murder and terrorism charges previously announced by New York prosecutors.

A "strong person of interest" in the killing of UnitedHealth executive Brian Thompson outside a midtown Manhattan hotel last week is in custody, New York City Mayor Eric Adams said on Monday. Luigi Mangione was arrested in Altoona,

A triptych of criminal charges paints a searing, sometimes disparate portrait of the man accused of ambushing and killing UnitedHealthcare’s CEO Brian Thompson

Mangione's hearing on state charges comes days after his dramatic return to New York to face federal counts in the slaying of Brian Thompson.

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Luigi Mangione pleads not guilty as he faces the prospect of life in prison without parole on charges including murder in the killing of a UnitedHealthcare CEO.

Luigi Mangione has been charged with one count of first-degree murder in furtherance of terrorism, in addition to other charges.

Luigi Mangione pleaded not guilty Monday to state charges in the murder of UnitedHealthcare CEO Brian Thompson.