Adly el-Mansour, the interim Egyptian head of state who was appointed after the army ousted President Mohammed Morsi, on Friday dissolved the Islamist parliament by decree.
State TV reported that Mansour appointed Mohamed Ahmed Farid as head of intelligence.
Farid replaces Mohamed Raafat Shehata, who Morsi appointed last year following the dismissal of Mourad Mowafy, who was fired following an attack in which 16 Egyptian soldiers were killed in a clash on the border with Israel.
Shehata will now become the national security adviser to Mansour, according to state TV.
On Friday, at least 10 people were killed during protests in Egypt, including four who were allegedly shot dead by security forces during a protest of support for Morsi outside the Republican Guard headquarters in Cairo.
The army denied shooting the demonstrators, claiming it only used tear gas and sound guns.
On Thursday the Egyptian Islamic Coalition, headed by the Muslim Brotherhood, called on supporters to take to the streets after Friday prayers and hold huge rallies.
Citizens were asked told to “demonstrate peacefully and say 'no' to the army's arrests and 'no' to the military coup.
Egypt’s transitional leaders denied that Morsi’s ouster at the hands of the army had been a military coup.
“This is not a military coup in any way. This was actually the overwhelming will of the people," said Foreign Minister Mohamed Kamel Amr.
(Arutz Sheva’s North American Desk is keeping you updated until the start of Shabbat in New York. The time posted automatically on all Arutz Sheva articles, however, is Israeli time.)