On Tuesday, Egypt's prosecution ordered the detention of former youth minister and leading Muslim Brotherhood member Osama Yassin for 15 days, pending investigation into charges of inciting murder.
Yassin was arrested on Monday and is facing charges related the alleged killing of protesters during clashes at the Brotherhood's headquarters on 30 June, as well as torturing and killing protesters at the Islamist-led Rabaa Al-Adawiya sit-in in Cairo, which was dispersed on 14 August.
He has denied all accusations against him, according to Ahram's Arabic news website.
Six leading members of the Muslim Brotherhood, including Supreme Guide Mohamed Badie and Deputy Guide Khairat El-Shater, are on trial facing charges of inciting the murder of protesters at the Brotherhood headquarters in Moqattam, Cairo. These clashes left eight people dead as the headquarters were stormed and ransacked by angry groups.
A dozen Brotherhood leaders and over one thousand members and supporters have already been arrested following the sit-in dispersal at Rabaa Al-Adawiya.