In a statement published on its website, the Brotherhood also called for demonstrations in public squares across the country after early evening prayers today.

The latest blow to Mr Morsi came yesterday when the Supreme Judicial Council, Egypt’s highest body of judges, called the move by the President to grant himself near-absolute power an “unprecedented assault” on the judiciary.

Through their statement, the judges joined a growing list of leaders and activists from Egypt’s political factions, including some Islamists, who have denounced the decree Mr Morsi says is necessary to “protect the revolution”. The council’s move reflects the anger within the judiciary.