Egyptian protest movement Tamarod (Rebel) has called for President Mohammed Morsi to be arrested on charges of calling for civil war.
In a joint statement with opposition group National Salvation Front (NSF), Tamarod also announced mass protests at the headquarters of the Republican Guards on Wednesday afternoon.
There are unconfirmed reports that President Morsi is currently staying at the building which is located near the Ittihadiya presidential palace in Cairo's Heliopolis.
Tamarod said the Republican Guards must arrest Morsi for "impersonating" the president of Egypt and threatening the people with violence if they continue their revolution,
"Morsi's repetition of the word 'legitimacy' in his speech (on national television) is due to his lack of real legitimacy," the statement said.