PITTSBURGH (AP) — The anti-Semitic truck driver accused of gunning down 11 people at a Pittsburgh synagogue pleaded not guilty Thursday to federal charges that could put him on death row, as funerals for the victims of the deadliest anti-Semitic attack in American history continued for a third day.

Robert Bowers, 46, was arraigned one day after a grand jury issued a 44-count indictment charging him with murder, hate crimes, obstructing the practice of religion and other crimes. It was his second brief appearance in a federal courtroom since the weekend massacre at Tree of Life synagogue in Pittsburgh’s Squirrel Hill neighborhood.

“Yes!” Bowers said in a loud voice when asked if he understood the charges.

Authorities say Bowers raged against Jews during and after the massacre. He remains jailed without bail.

Bowers, who was shot and wounded during a gun battle that injured four police officers, walked into court under his own power, his left arm heavily bandaged. He was in a wheelchair at his first court appearance Monday.

Bowers, who is stocky and square-faced with salt-and-pepper, closely cropped hair, frowned as the charges were read but did not appear to have a reaction as a federal prosecutor announced he could face a death sentence. He told a prosecutor he had read the indictment.

One of his federal public defenders, Michael Novara, said Bowers pleaded not guilty, “as is typical at this stage of the proceedings.”

Bowers had been set for a preliminary hearing on the evidence, but federal prosecutors instead took the case to a grand jury.

The panel issued the indictment as funerals continued for the victims, including a husband and wife married at Tree of Life 62 years ago.