In Egypt, the Muslim Brotherhood has condemned the arrest of its leader Mohammad Badie over allegations of incitement to violence and murder.
A Brotherhood spokesman said the arrest was part of a plot against the 2011 revolution that ousted Hosni Mubarak.
Mr Badie was detained near the site of a Cairo protest camp cleared by police last week with heavy loss of life. Egyptian television has reported that Mr Badie is to be held for 15 days on allegations of having incited the murder of protesters.
The United States has also criticised the arrest of Badie. The White House says the move runs contrary to the military’s commitments to foster an inclusive political process.
Meanwhile, Egypt’s former Vice President Mohamed ElBaradei is to face trial on charges of breaching national trust. Mr ElBaradei, who is out of the country, resigned on the 14th of this month after security forces dispersed two protest camps in Cairo set up by supporters of ousted President Mohammed Morsi.