A final ruling in the case of former Egyptian President Hosni Mubarak is expected by 2013, a plaintiff in the case has said.
In an interview with daily newspaper Al-Akhbar, lawyer Khaled Abu Bakr said he intends to request the testimony of Field Marshal Hussein Tantawi, head of the Supreme Council of the Armed Forces, in the trial.
The three people who know the truth about the killing of protesters during the 25 January revolution, he added, are Tantawi, the Muslim Brotherhood's supreme guide and former intelligence chief Omar Suleiman.
Abu Bakr said Tantawi should appear in court to say whether he received orders from Mubarak to use force to disperse the protesters.
Tantawi's testimony would be key to determining whether the police and the army were asked to forcibly suppress the protests, Abu Bakr said.
He said that summoning Suleiman to testify in court is equally important because he would reveal whether Republican Guards participated in quelling the protests, either by shooting protesters or supplying information.