Deadly clashes have erupted in Cairo at a protest held by supporters of ousted Egyptian President Mohammed Morsi.
Running battles are taking place around the Rabaa al-Adawiya mosque and there is blood on the streets, says the BBC’s Quentin Sommerville at the scene.
Reports of the death toll vary, but Mr Morsi’s Muslim Brotherhood says at least 31 people have been killed.
Early on Saturday, Interior Minister Mohammed Ibrahim vowed to end the sit-in at the mosque.
He said local residents had complained about the encampment and that the protest would be “brought to an end soon and in a legal manner”.
Overnight, huge rallies were held by supporters and opponents of Mr Morsi.
Many thousands occupied Cairo’s Tahrir Square in support of the army, which removed Mr Morsi from office earlier this month.
Army chief Gen Abdel Fattah al-Sisi had urged people to take to the streets to give the military a mandate for its intervention.
Our correspondent says automatic gunfire can still be heard and the area around the mosque is being hit by barrages of tear gas.
Security forces, joined by anti-Morsi demonstrators, appear to be forcing protesters closer to the mosque and ambulances are taking people to nearby hospitals, he adds.
Hundreds of people are said to have been injured.
Most wounds appear to be from buckshot and CS gas canisters, our correspondent says, but there are reports of live fire.
