A military court sentenced the Supreme Guide of the Muslim Brotherhood Mohamed Badie and leading figure Mohamed El-Beltagy to ten years in prison on charges relating to the storming of an Ismailia court complex in 2013.
Islamist preacher Safwat Hegazy and Brotherhood figure Mohamed Wahdan were also handed ten-year prison terms by the court, while sentences ranging from life imprisonment to two years were handed to 299 other defendants.
The defendants can still appeal the sentences.
Badie, Hegazy, and El-Beltagy are all serving life sentences upheld by the Court of Cassation over a different violence-related case from 2013.
The Ismailia case dates back to August 2013 following the forced dispersal of pro-Brotherhood Rabaa El-Adawiya and Nahda protest camps; dozens of protesters stormed into the Islamilia court complex after the deadly dispersal and set it ablaze.
The defendants, who were referred to the Ismailia military court, were charged by the general prosecution with murder, the storming of a public institution, inciting violence and riots, and resisting police and military.