Ousted Egyptian president Mohamed Morsi, already on trial for allegedly inciting violence, also will be tried on charges of insulting the judiciary.
Egypt's state-run news agency reported Sunday that just before the military threw him out of power, Mr. Morsi accused a judge of election fraud during a speech.
The former president already is being tried for inciting violence that led to the deaths of protesters. He also is facing two other trials -- one for alleged spying and another on charges of organizing a prison break.
Leaders of Mr. Morsi's Muslim Brotherhood movement also face similar charges.
Egypt's military overthrew Mr. Morsi in July when the opposition accused him of grabbing too much power.
Egyptians voted almost unanimously in favor of a new referendum last week to replace Mr. Morsi's pro-Islamist constitution with a new one. Elections for a new president and parliament are expected later this year.