The man accused in the Pittsburgh synagogue massacre was released from a hospital and turned over to federal authorities for a court appearance Monday on charges he killed 11 people in what is believed to be the deadliest attack on Jews in U.S. history.

Robert Gregory Bowers, 46, who was shot and wounded in a gun battle with police, arrived at the federal courthouse in downtown Pittsburgh less than two hours after his release from Allegheny General Hospital, according to U.S. marshals. A government car with a wheelchair visible inside could be seen arriving earlier.

Federal prosecutors set in motion plans to seek the death penalty against Bowers, who authorities say expressed hatred of Jews during the rampage and later told police that "I just want to kill Jews" and that "all these Jews need to die."

The first funeral — for Cecil Rosenthal and his younger brother, David — was set for Tuesday. Survivors, meanwhile, began offering harrowing accounts of the mass shooting Saturday inside Tree of Life Synagogue. Barry Werber said he found himself hiding in a dark storage closet as the gunman tore through the building and opened fire.