(NewsNation) — Luigi Mangione, who is accused of killing UnitedHealthcare CEO Brian Thompson, is expected to waive extradition to New York while at a court hearing in Pennsylvania on Thursday, sources tell NewsNation.

Mangione’s New York attorney is vowing to fight every charge, as his client could spend the rest of his life in prison if convicted. The 26-year-old is charged with first-degree murder in the furtherance of terrorism, as well as two counts of second-degree murder.

New York Gov. Kathy Hochul says extradition is going to happen one way or another.

“I’m ready to bring him back and make sure justice is served to someone who had the audacity to gun down any New Yorker,” Hochul said. “I don’t care what their title is. That brazen move on our streets must result in severe consequences.”

According to a local news outlet, if Mangione does get extradited to New York, he could be booked, processed, and arraigned in front of a different judge as soon as Thursday afternoon.

NewsNation reached out to Mangione’s attorneys for comment.

Shooting of Brian Thompson

Thompson, 50, was fatally shot just before 7 a.m. Dec. 4 in front of a Hilton hotel while walking to UnitedHealth Group’s annual investor meeting in New York City.

The words “deny,” “depose” and “defend” were written on the shell casings found at the scene. It is an apparent reference to the title of the book “Delay, Deny, Defend,” which is about the ways insurance companies reject requests for medical coverage deemed necessary by doctors.

Authorities arrested Mangione at a McDonald’s in Altoona, Pennsylvania on Dec. 9. With him at the time were a mask, firearm, suppressor and fake New Jersey ID that connected him to the shooting, police said.

Mangione also had a manifesto and a spiral notebook with a “to-do” list. In the manifesto, Mangione wrote that he acted alone and that he “apologizes for any strife or traumas, but it had to be done.”

“Frankly, these parasites had it coming,” he wrote.

Mangione has been held without bail at the State Correctional Institution Huntingdon in Pennsylvania.