Former Egyptian president Hosni Mubarak appeared in court today, along with his jailed sons Gamal and Alaa and former interior minister Habib al-Adly.
After a hearing that lasted about three hours, the judge set the next session for September 14, pending further investigation.
He was sentenced to life in prison last year for complicity in the killing of protesters during the 2011 revolt against him, but an appeals court ordered a retrial.
More top news
The announcement came a day after a famine was declared in two areas of South Sudan following three years of civil war and severe inflation.
It is unclear what their alleged plans were.
Anti-terror police are currently questioning the men who were arrested at three separate locations in France.