That came weeks after U.S. Attorney General Pam Bondi announced that she would be directing federal prosecutors to seek the death penalty for what she called "an act of political violence" and a "premeditated, cold-blooded assassination that shocked America."
It was the first time the Justice Department said it was pursuing capital punishment since President Donald Trump returned to office Jan. 20 with a vow to resume federal executions after they were halted under the previous administration.
Mangione's lawyers have argued that Bondi's announcement was a "political stunt" that corrupted the grand jury process and deprived him of his constitutional right to due process. They had sought to block prosecutors from seeking the death penalty.