Clinton, 41, is accused of strangling to death Heather Jackson, 23, and her children, Celina, 3 and Wayne, 18-months. Their bodies were discovered in Jackson's John Street home Sept. 8 and Clinton was arrested for the murder two days later.
He also has been charged with sexually assaulting Celina and two counts of rape for an unrelated incident, in which he allegedly attacked a 17-year-old girl a week before the killings.
His attorneys also have filed motions asking the court to pay for mental health professionals to be appointed to the case and a death penalty expert.
The trial is scheduled to start in August next year, but the next hearing in the case will be Dec. 6.
For more on this story, pick up a copy of Tuesday's Register.