Luigi Mangione has been charged with murder of UnitedHealthcare CEO

The New York Police Department has charged Luigi Mangione with first degree murder, according to an online court docket filed on Monday.

Mangione — the 26-year-old suspect in the shooting death of UnitedHealthcare CEO Brian Thompson — was also charged with possession of a loaded firearm, possession of a forged instrument and criminal possession of a weapon, according to the docket.

The forged instrument is the fake NJ driver’s license that he allegedly used to check into the hostel on the Upper West Side.

Mangione remains in the custody of the Pennsylvania Department of Corrections pending his extradition to New York.

The NYPD charges came hours after Mangione was arrested in Altoona, Pennsylvania, after he was identified by an employee at a McDonald’s.

The Pennsylvania Department of Corrections released Mangione’s mug shot on Monday evening.

He has been charged with five crimes, including carrying a gun without a license, forgery, falsely identifying himself to authorities and possessing “instruments of crime,” according to a newly released criminal complaint.

The charging document alleges that Mangione lied about his identity to police and carried the ghost gun without a license.

The gun and suppressor were “consistent with the weapon used in the murder,” NYPD Commissioner Jessica Tisch said on Monday.

During the search of Mangione’s backpack upon his arrest, officers allegedly found a black 3-D printed pistol and a black silencer, which was also 3-D printed, according to the criminal complaint filed in Pennsylvania on Monday afternoon.

“The pistol had one loaded Glock magazine with six nine-millimeter full metal jack rounds. There was also one loose nine-millimeter hollow point round,” the complaint alleges.

NYPD Chief of Detectives Joe Kenny described the weapon allegedly found on Mangione as a “ghost gun,” meaning it had no serial number and was untraceable.

Also recovered from Mangione at the time of his arrest were several handwritten pages.

NYPD Chief of Detectives Joe Kenny said that the document contained writing that expressed “some ill will toward corporate America.”

The writings mention UnitedHealthcare by name, law enforcement sources told ABC News.

The sources described the handwriting as sloppy and included these quotes: “These parasites had it coming” and “I do apologize for any strife and trauma, but it had to be done.”

Police are now looking at Mangione’s travel at various points across the United States and out of the county within the past year, the sources said.

This is a developing story. Please check back for updates.