Egypt's prosecutor-general on Saturday referred 25 defendants to court on charges of torturing two members of the Tamarod (Rebel) campaign in January of last year.
The 25 are accused of kidnapping and torturing the victims for organising and participating in demonstrations in Upper Egypt's Minya against the now ousted president Mohamed Morsi, who hails from the Muslim Brotherhood.
The Tamarod campaign played a leading role in building up the 30 June protests that led to Morsi's ouster.
The prosecutor-general's statement said forensic examination revealed that one of the victims had suffered permanent damage due to the torture.
Police have managed to arrest seven of the accused.
The statement said that the accused are members of the Brotherhood, which it classified as a terrorist group.
The Brotherhood was deemed a terrorist organisation by interim authorities last December, a designation later upheld by a court order.