Robert Bowers, 46, an avowed anti-Semite, appeared defiant and determined in court. Dressed in a red jumpsuit and with a bandaged left arm, he walked into the courtroom with a swagger.
He spoke little, other than to say he understood the charges against him, and that some of them could result in the death penalty, followed by entering a plea of "not guilty."
Bowers was injured during a shootout with police during the massacre at the Tree of Life synagogue in Pittsburgh's Squirrel Hill neighborhood in what is believed to be the worst anti-Semitic attack in U.S. history. He had appeared in court on Monday shackled to a wheelchair.
His appearance in court on Thursday came as funerals for three more victims were planned during the day.
Funerals will be held for Sylvan Simon, 86, his wife, Bernice, 84, and for Richard Gottfried, 65.
Prosecutors have said they will seek the death penalty against Bowers.