Appearing defiant and swaggering, the man charged with killing 11 worshipers in a Pittsburgh synagogue, pleaded not guilty on Thursday in a federal court as the Jewish community buried three more of the dead.

Robert Bowers, 46, an avowed anti-Semite, was brought before Judge Robert Mitchell in U.S. District Court for the Western District of Pennsylvania, dressed in a red jumpsuit with a bandaged left arm.

He spoke little, other than to say he understood the charges against him and that some of them could result in the death penalty, then entered a plea of not guilty. He also requested a jury trial.