CAIRO (AFP) - Egypt's once feared former interior minister Habib al-Adly pleaded not guilty to corruption charges on Saturday, in the first trial of a member of ousted president Hosni Mubarak's regime. Standing in the dock and dressed in white prison clothes, Adly denied accusations of money laundering and unlawful acquisition of public money. "It didn't happen," he said twice, in a calm tone. Throughout the trial, dozens stood outside the Cairo criminal court to demand the death penalty for Adly, whose forces have long been accused by rights groups of torture. Riot police surrounded the courthouse in the Tagammu Khames suburb and three army tanks were positioned at the entrance ahead of the high profile trial. "The people want the execution of the murderer," the protesters chanted, as others held banners depicting Adly with a noose around his neck. The corruption case against Adly has fallen short of demands of some pro-democracy activists who want to see him tried for human rights abuses. The former minister is currently being investigated for ordering the shooting of protesters with live bullets during 18 days of riots that brought down Mubarak. Shortly after the start of the hearing, Judge Al-Mohammadi Qunsua adjourned the session to April 2, after a heated exchange between the defence team and civil society lawyers attending the trial. Defence lawyer Mohammed Yussef Manaa had asked for more time to study the documents of the case, and refused to comment after the trial. Meanwhile on Saturday, hundreds of protesters tried to storm a state security building in the Cairo suburb of Sheikh Zayed to retrieve documents for evidence of misconduct. Witnesses said police could be seen burning papers and had fired several gunshots from inside the building. The dreaded state security is a branch of the interior ministry accused by rights groups of crushing dissent through torture. Meanwhile, two men were killed during clashes in Egypt between Muslims and Christians. "Two people were killed, and the Shahedain church set on fire in clashes between two families," the official told the MENA news agency. The violence was triggered by a feud between the families, which disapproved of a romantic relationship between a Christian man and a Muslim woman in the province of Helwan. It culminated in fighting on Friday in which both of the couples' fathers were killed, another security official said. The army, which has been maintaining security in Egypt since police disappeared during anti-regime protests last month, managed to put the fire out and restore calm to the area, the official said.