Egyptian Army soldiers and medics transport former president Hosni Mubarak back to a military hospital after a court hearing in the southern suburb of Maadi, on the outskirts of Cairo, August 25, 2013.[Photo/Agencies]

CAIRO - Three leaders of Egypt's Muslim Brotherhood and the movement's former arch-foe Hosni Mubarak faced separate trials on Sunday on similar charges of involvement in the killing of protesters.

With Egypt now under an army-installed government after last month's overthrow of Islamist President Mohamed Mursi, local media seized on the symbolism of scheduling both sessions on the same day. "Trial of two regimes," headlined al-Shorouk daily.

In the end, Mohamed Badie, the Brotherhood's "General Guide", and his deputies did not appear at the opening of their trial for security reasons, a judicial source said. Citing their absence, the judge adjourned the proceedings until October 29.

The case against Badie, Khairat al-Shater and Rashad Bayoumy relates to unrest before the army removed Mursi on July 3 and detained him in an undisclosed location.

More than 1,000 people, including about 100 soldiers and police, have died in violence across Egypt since Mursi's fall, making it the bloodiest civil unrest in the republic's 60-year history. Brotherhood supporters say the toll is much higher.

Mubarak, who left prison on Thursday after judges ordered his release, appeared in a courtroom cage in a wheelchair, wearing sunglasses and dressed in white, along with his jailed sons, Gamal and Alaa, and the former interior minister, Habib al-Adly.

After a hearing that lasted about three hours, the judge set the next session for September 14, pending further investigation.

The former president was sentenced to life in prison last year for complicity in the killing of protesters during the 2011 revolt against him, but an appeals court ordered a retrial.

A helicopter flew Mubarak to the court in the Police Academy on the eastern outskirts of Cairo from a military hospital where he was placed under house arrest after his release from jail.

The government used a state of emergency it declared earlier this month to place Mubarak under house arrest, apparently to forestall any public anger if he had simply walked free.

Mubarak-era prime minister Ahmed Nazif was released earlier this year because of a limit on pre-trial detention. Former Housing Minister Ibrahim Soliman, sentenced to eight years in jail on corruption charges after the 2011 uprising, was released on Sunday pending his appeal, judicial sources said.

The trial of the Brotherhood leaders signals that Egypt's new rulers intend to crush what they have portrayed as a violent, terrorist group bent on subverting the state.

The Brotherhood, which won five successive post-Mubarak votes, says it is a peaceful movement unjustly targeted by the generals who ousted Mursi, Egypt's first freely elected leader.

The military contends it was responding to the people's will, citing vast demonstrations against Mursi, who was criticized for accumulating excessive power, pushing a partisan Islamist agenda and mismanaging the economy.