One of the trials putting ousted Egyptian President Mohammed Morsi in the dock is due to resume in Cairo.
Mr Morsi and 14 other figures from the Muslim Brotherhood are charged with inciting the killing of protesters near the presidential palace in 2012.
At a hearing in another trial four days ago, a defiant Mr Morsi shouted that he was still the legitimate president.
He was deposed by the military in July last year after huge crowds rallied against him.
He is now facing four separate criminal trials on various charges.
Mr Morsi’s Islamist supporters say the charges against him are politically motivated, although officials insist the trials are free and fair.
Islamists have staged regular protests demanding the reinstatement of Mr Morsi but have been met with a heavy crackdown in which hundreds have died.
The Muslim Brotherhood has been declared a terrorist organisation and authorities have punished any public showing of support for it.
There are regular clashes between supporters and opponents of Mr Morsi on the streets of Cairo
On Friday, riot police fired tear gas at hundreds of Morsi supporters in Cairo and Alexandria and Fayoum, south of the capital.
Last November, in his first court appearance for the trial resuming on Saturday, Mr Morsi chanted slogans against the current government and the court.
He also refused to recognise the court’s legitimacy or put on the required prison uniform.
Last Tuesday he appeared in court at the beginning of a trial over his escape from prison in 2011.
He was accused of organising a mass breakout from the Wadi al-Natrun prison during the uprising that toppled President Hosni Mubarak, as well as the murder of prison officers.
During that court appearance, from inside a glassed-in defendants’ cage, he shouted: “I am the president of the republic, how can I be kept in a dump for weeks?”