Muslim Brotherhood official Amr Darrag condemned an Egyptian court's decision to seek the death penalty for former president Mohamed Morsi and called on the international community to take action.
"This is a political verdict and represents a murder crime that is about to be committed, and it should be stopped by the international community," Darrag, co-founder of the dissolved Freedom and Justice Party, the political wing of the Muslim Brotherhood, told Reuters in Istanbul.
An Egyptian court has sought the death sentence for former President Mohamed Morsi and 105 other members of the Muslim Brotherhood in connection with a mass jail break in 2011.
The cases, like any capital sentence, will be referred to Egypt's top religious authority, the Grand Mufti, for any opinion before any executions can take place.
Former Egyptian President Mohamed Morsi has been sentenced to 20 years in jail over protester deaths in 2012, in a televised court decision.
It is the first verdict to be issued against the country's first freely-elected leader.
The Cairo Criminal Court issued the verdict as Morsi and other defendants in the case - mostly Muslim Brotherhood leaders - stood in a soundproof glass cage inside a makeshift courtroom at Egypt's national police academy.
The case stems from violence outside the presidential palace in December 2012.
An Egyptian court has sentenced 183 supporters of the outlawed Muslim Brotherhood to death on charges of killing police officers, as authorities continued their crackdown on Islamists.
The men were convicted of playing a role in the killings of 16 policemen in the town of Kardasa in August 2013 during the upheaval that followed the army's ouster of Islamist president Mohamed Morsi.
An Egyptian court has sentenced Muslim Brotherhood leader Mohamed Badie to life in prison, the court's judge said, for inciting violence that erupted after the army deposed Islamist President Mohamed Morsi last year.
According to Reuters, the court also upheld death sentences for 10 other Brotherhood leaders and supporters, of whom eight were charged in absentia, on the same crimes.
Two supporters of former Egyptian president Mohamed Morsi have been sentenced to death for committing murder during violence which occurred last year after the army's deposed the Islamist head of state.
The pair were standing trial on charges that included throwing youths from the roof of a building in Alexandria.
The sentences came in the wake of the separate and unprecedented sentencing to death of 529 supporters of Morsi's Muslim Brotherhood last Monday.
Three journalists working for the Gulf new agency Al Jazeera have been detained in Egypt accused of broadcasting illegally from a hotel suite among other allegations.
Al Jazeera has named them as former BBC journalist Peter Greste, Baher Mohamed and Mohamed Fahmy.
A fourth person - a cameraman - was arrested with them on Sunday but has since been released. The other three have been remanded in custody for 15 days.
Egyptian authorities have accused Al Jazeera of backing the Muslim Brotherhood, which was recently ruled a terrorist organisation.
The Brotherhood leader and presidential candidate Mohamed Morsi was overthrown last year.
Former Egyptian President Mohamed Morsi and 129 others have been referred to trial over a jail break during the 2011 uprising.
The trial of ousted Egyptian president Mohammed Morsi has been adjourned until January 8th.
Earlier, the judge halted proceedings after a defiant Morsi interrupted the session to insist he was the "legitimate president" of Egypt.
The deposed leader is charged with inciting violence and murder during protests last December.
Egyptian state television have broadcast footage of Mohammed Morsi in a Cairo courthouse, in the first public sighting of the ousted leader since he was forced out by the army in July.
The footage also showed Morsi stepping out of a white van surrounded by security forces.
Earlier, Morsi told the court that he remains the "legitimate president" of Egypt prompting the judge to adjourn proceedings.