New York indicts Luigi Mangione, CEO of UnitedHealthcare, as a murder suspect.

A New York grand jury has indicted the Ivy League-educated computer programmer who was charged in the ambush murder of UnitedHealthcare CEO Brian Thompson.

On Dec. 4, Luigi Mangione, 26, was accused of sneaking up behind Thompson outside a Manhattan Hilton hotel while the victim, a resident of Minnesota, was making his way to a shareholder conference.

Mangione is now charged with first-degree murder, two counts of second-degree murder, seven criminal possession of a weapon charges of various degrees, and criminal possession of a forged instrument, all felonies.

A masked man ambushed and shot Thompson in the back in a premeditated and targeted shooting, as shown in surveillance video.

On Monday, Dec. 9, in Altoona, Pennsylvania, Mangione was apprehended following recognition from a McDonald's staff.

Last week, a court was informed that he intends to challenge extradition while being detained without bail.

Initially, Mangione was charged with second-degree murder, but now prosecutors claim the murder was an act of terrorism.

The suspect dropped a burner phone at the scene, and fingerprints were found on other items. Additionally, authorities reported a ballistic match between Mangione's gun and the rounds that killed Thompson.

The police found that parts of the suspected murder weapon, including the receiver and suppressor, were 3D printed. Additionally, a group of 9mm bullet casings at the scene contained the words "defend," "depose," and "deny."

Thompson, 50, spent 20 years working for UnitedHealth Group and was appointed CEO of the UnitedHealthcare subsidiary in April 2021. He has two children.

Planet Chronicle' Eric Revell contributed to this report.

This is a developing story.