Egypt's Opposition Leader Mohamed ElBaradei was appointed the country's interim Prime Minister on Saturday and assigned the task to form a transitional government, Xinhua reported citing state-run media.
He has earlier served as the head of International Atomic Energy Agency (IAEA) and jointly won the Nobel Peace Prize in 2005.
The Prime Minister's post had fallen vacant after Mohamed Morsi, the country's President and first freely-elected leader, was ousted by army Wednesday along with his government being led by Prime Minister Hesham Qandil.
As millions of people protested against Morsi's "poor performance, maladministration" and Islamist policies for days, Adli Mansour, the country's Chief Justice, was appointed the interim head of state Thursday with the help of army.
Meanwhile, earlier Saturday, ElBaradei, the Leader of the Opposition bloc known as the National Salvation Front, reportedly resigned as Chairman of the Al- Dostour Party.
On Friday, at least 35 were killed and over 1,400 injured in clashes between Morsi's opponents and Islamist proponents in Cairo and other governorates across the country.