Luigi Mangione, 26, was formally charged last week by the Manhattan district attorney with multiple counts of murder, including murder as an act of terrorism.

Luigi Mangione is expected to appear Monday morning before Judge Gregory Carro. The arraignment is in regard to 11 charges ...

Prosecutors plan to try the 26-year-old on state charges first, before he faces federal charges in Brian Thompson's death.

As investigators continue probing the United Healthcare CEO killing, there is concern among about the long-term impacts the ...

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.

Luigi Mangione is due in a New York courtroom to face state charges in the murder of UnitedHealthcare CEO Brian Thompson.

Luigi Mangione, the suspect in the fatal shooting of UnitedHealthcare CEO Brian Thompson on a busy sidewalk in Midtown ...

Luigi Mangione, the man suspected of fatally gunning down UnitedHealth Group chief executive Brian Thompson on a Manhattan ...

It was writings laid bare in a notebook found in Luigi Mangione’s possession, authorities say, that would help investigators build the federal case against him –<a class="excerpt-read-more" href=" Mor ...

LOWER MANHATTAN (WABC) -- Luigi Mangione has been sitting in a federal jail since his arrival in New York City last Thursday. The accused shooter of UnitedHealthcare CEO Brian Thompson ... week with ...

A US health boss's murder sparked a torrent of online misinformation and calls for violence against other executives, ...