The UN Security Council will hold an emergency meeting on Egypt at 2130 GMT today, following a request from France, Britain and Australia, diplomats said.
The meeting comes a day after a crackdown by Egyptian security forces on protesters backing the deposed Islamist president Mohamed Morsi, which left more than 500 people dead.
France and Britain are permanent members of the Security Council and Australia is one of the 15 countries currently represented.
One diplomat said the joint request had been submitted to Argentina, which currently presides over the council. The diplomat added that a Council statement was not likely.
United Nations Secretary General Ban Ki-moon has condemned the crackdown, and UN rights chief Navi Pillay demanded that a wide-ranging probe be carried out.
