Luigi Mangione is charged with the murder of the director general of health

“We have indications that the defendant may waive this hearing,” Bragg said.

The extradition hearing is scheduled for the same day as Mr. Mangione’s preliminary hearing on gun charges in Pennsylvania.

Speaking at a news conference Tuesday afternoon, Bragg and New York Police Department Commissioner Jessica Tisch criticized the public. For praising Mr. Mangione after the Dec. 4 shooting.

“In the nearly two weeks since Mr. Thompson’s murder, we have seen a shocking and horrific celebration of cold-blooded murder,” Tisch said. “We don’t celebrate killings and we don’t condone the killing of anyone.”

In addition to murder, the suspect faces weapons and forgery charges. If he is convicted of the most serious charges against him – first-degree murder and second-degree murder as an act of terrorism – Mr. Mangione could face life in prison without the possibility of parole.

Asked about the specific terrorism charges, Bragg said, “in the most basic terms, this is a terroristic murder.”

Five days after the shooting death of Mr. Thompson, the chief executive of UnitedHealthcare, Mr. Mangione was arrested at a McDonald’s in Altoona, Pennsylvania, with a fake ID and a so-called “ghost gun,” the police said.

His lawyer, Thomas Dickey, said he had seen no evidence linking Mr. Mangione’s gun to the crime.

New York prosecutors last week began sharing evidence with a grand jury in their case against Mr. Mangione.

If extradited, the 26-year-old is expected to be held at Riker’s Island or another New York prison.