Ousted Egyptian President Hosni Mubarak pleaded not guilty to ordering the killing of some 900 anti-government protesters in a court appearance in Cairo on Wednesday. The judge in the case adjourned the trial of the former dictator until August 15. Mubarak, who was deposed after an 18-day uprising earlier this year, is also charged with corruption, abuse of power and squandering public wealth. If found guilty, Mubarak could face the death penalty. The former dictator was wheeled into the courtroom in a hospital bed for his appearance. Outside, crowds watched the proceedings on large video screens, and at one point Mubarak supporters and opponents threw stones at each other. The judge ordered him to be detained in a local hospital until his trial resumes later this month. Mubarak had been staying with his family at the Red Sea resort of Sharm el-Sheikh.