Defendant Maksim Gelman did not appear at the hearing on Monday in Brooklyn. His new attorney, Edward Friedman, had no comment.
Gelman had been arraigned Sunday in Brooklyn Criminal Court on charges of second-degree murder, robbery and assault. He is being held without bail.
The Ukraine-born man is accused of stabbing three people to death, killing a pedestrian with a car, injuring several people and hijacking cars.
Gelman's initial public defender, Michael Baum, represented Gelman at the arraignment. Baum says he cannot shed any light on Gelman's mental state.