埃及穆斯林兄弟会领袖巴棣被捕
The spiritual leader of the Muslim Brotherhood, Mohammed Badie, has been arrested in Cairo, Egyptian officials say.
埃及穆斯林兄弟会的精神领袖穆罕默德·巴棣在开罗被捕。
Reports said he was detained at a residential flat in Nasr City.
A state of emergency is in force in Egypt amid turmoil（混乱，骚动） following a crackdown on Islamists in which hundreds have died.
Three days of mourning are being held for 25 police killed in Sinai by suspected Islamist militant extremists.
Almost 900 people, including more than 100 police and soldiers, are reported to have been killed in Egypt since Wednesday, when the army cleared protest camps set up by supporters of deposed President Mohammed Morsi, many of them members of the Muslim Brotherhood movement.
On Sunday, 36 Islamist protesters died in a prison van in the capital, Cairo.
Protests suppressed
Hundreds of members of the Muslim Brotherhood have been detained over recent days.
Mr Badie had been on the run as the military-backed interim authorities in Egypt try to suppress protests at the ousting of Mr Morsi.
He is facing charges of inciting violence and murder over the killing of eight anti-Brotherhood protesters outside the movement's headquarters in Cairo last June.
Officials and state media said Mr Badie was detained in a flat in Nasr City in north-east Cairo, near the site of one of the protest camps bloodily broken up last week.
Images of Mr Badie shortly after his arrest were shown on the private channel ON TV.
The arrest comes days after Mr Badie's 38-year-old son, Ammar, was shot dead during protests in the capital's Ramses Square.
Mr Badie's deputy, Khairat al-Shatir, was arrested in the days following Mr Morsi's overthrow.
Correspondents say his detention will further ratchet up tensions in the country, where an indefinite dusk till dawn curfew is in place, a leaves a power vacuum at the top of the Brotherhood movement.