The man accused in the attack — the deadliest on Jews in American history — made his first court appearance Monday, two days after the massacre. Robert Bowers, a 46-year-old truck driver, was using a wheelchair in federal court because of injuries he sustained in a gun battle with police at the synagogue in the Squirrel Hill neighborhood. He allegedly told authorities upon his arrest that he was seeking to kill Jews, and repeated that pronouncement when he arrived in the emergency room at Allegheny General Hospital, where some of the doctors and nurses who treated him were Jewish.