Muslim Brotherhood has slammed the Egyptian army for the ouster of former president, Mohamed Morsi, comparing the country's military rule to that of Adolf Hitler in Nazi Germany.

The Brotherhood lashed out at the army on Thursday, ahead of mass rallies planned for Sunday against the Egyptian military and its July 3 ouster of Morsi.

Supporters of the military are also planning a rival rally on the same day in the capital, Cairo, raising fears of violent clashes between the two sides.

The military supporters want to mark the anniversary of the beginning of Egypt's war with Israel back in 1973.

Egypt plunged into unrelenting violence on July 3, when the army ousted Morsi, suspended the constitution, and dissolved the parliament. It also appointed the head of the Supreme Constitutional Court, Adly Mahmoud Mansour, as the new interim president.

The army-backed interim government soon launched a deadly crackdown on Morsi supporters and arrested thousands of Muslim Brotherhood members. Among the arrested was the group's supreme leader, Mohamed Badie, who was detained on August 20.

Last month, an Egyptian court banned the Islamic group, and ordered the seizure of its funds in a heavy blow to the movement.