Cairo ( CNN ) -- Hosni Mubarak should be tried by a special tribunal because he is still president of Egypt and did not sign an official resignation , his lawyer said Sunday . `` He gave up the presidency orally to former vice-president Omar Suleiman without signing any official document , which is not legal by the constitution , '' lawyer Farid El Deeb said . The court proceedings were recounted to CNN by civil rights lawyer Khaled Abu Bakr , who attended the hearing . A former head of an Egyptian lawyers ' organization said Mubarak is not the president . `` The revolution revokes the constitution , '' Zakaria Abdel Aziz said . `` The Egyptian people said their word ... this is a nation that had a vice president at the time and this is an ousted president . '' The trial was adjourned until Monday , when lawyers will start their defense of the former interior minister , who faces charges with Mubarak and his sons . Last week , El Deeb called for Mubarak to be tried in a military court , saying military law dictates that he is still the head of the Egyptian air force . Mubarak is accused of corruption and ordering protesters killed during the country 's uprising that brought his 30-year rule to an end in February . He has denied the charges . Two of Mubarak 's sons are also on trial on a variety of charges . The sons , Gamal and Alaa , have pleaded not guilty . Amnesty International had estimated more than 840 protesters were killed and 6,000 injured . A prosecutor 's spokesman cited 225 people killed and more than 1,300 injured , saying the number is lower because there is a difference between those killed while attacking police stations and those shot while protesting .
NEW : `` The Egyptian people said their word ... this is an ousted president , '' analyst says . Mubarak is accused of corruption and ordering protesters killed . He has denied the charges . Last week , the lawyer called for Mubarak to be tried in a military court .