The International Criminal Court has rejected a petition by the Muslim Brotherhood against a death sentence ruled against its Supreme Guide.
French Foreign Minister Laurent Fabius Wednesday criticised Egypt for imposing death sentences on nearly 700 suspected Islamists.
A senior government official said Saudi Arabia has delayed sending any new aid to Egypt until the results of the next presidential elections are announced.
Members say that Monday's ruling dissolving the movement is an effort to silence 'serious' dissent in Egypt.
Mass death sentence of 683 people, the second in a month, draws pointed condemnation both in Egypt and globally.
Tamarod movement's co-founder, Mahmoud Badr, announces Tamarod's plans to form a political party.
Muslim Brotherhood Supreme Guide Mohamed Badie was among 683 people sentenced to death in Minya on Monday over the killing of a police officer.
Various political groups condemn the ban on April 6 activities as contradicting basic freedoms and signalling a return to a repressive Egypt.
The Brotherhood will file a lawsuit in the International Criminal Court (ICC) against the Minya Criminal Court's decision to execute 37 members of the group.
German foreign minister says Egyptian authorities are risking destablisation of their country.