Amnesty International on Saturday called an Egyptian court's decision to seek the death penalty for ousted Islamist president Mohamed Morsi "a charade based on null and void procedures" and demanded his release or retrial in a civilian court.
The court sought the death penalty for Morsi and more than 100 supporters of his banned Muslim Brotherhood group in connection with a mass jail break in 2011.
An Egyptian court sentenced Morsi and more than 100 others to death on Saturday for their role in a mass jailbreak during the 2011 uprising.
Hours after the ruling, gunmen shot dead three judges in the strife-torn Sinai Peninsula.
Morsi, sitting in a caged dock in the blue uniform of convicts having already been sentenced to 20 years for inciting violence, raised his fists in defiance when the judge read out his verdict.
The judge issued the same sentence to more than 100 other defendants including Muslim Brotherhood leader Mohamed Badei, who has also been handed the death penalty in another trial, and his deputy Khairat al-Shater.
Morsi, who rose to the presidency in 2012 as the Brotherhood's compromise candidate after Shater was disqualified, won an election and ruled for only a year before mass protests prompted the military to overthrow him in July 2013.
He and dozens of other Islamist leaders were then detained amid a crackdown that left hundreds of his supporters dead.
Many of those sentenced on Saturday were tried in absentia, including prominent Islamic cleric Yusuf al-Qaradawi, who resides in Qatar.