An Egyptian court on Monday banned the Muslim Brotherhood from operating and ordered its assets seized, in the latest blow to the Islamist movement of deposed President Mohamed Morsi.

Egypt’s government Tuesday pressed its fierce campaign against the Muslim Brotherhood of ousted President Mohamed Morsi, effectively decapitating the Islamist group by arresting its supreme guide.

A defiant Muslim Brotherhood Thursday vowed to bring down the military-backed government after Egypt witnessed its bloodiest day since the Arab Spring with at least 421 people killed in a crackdown by security forces on supporters of ousted President Mohammed Morsi.

Supporters of Egypt’s ousted President Mohamed Morsi marched defiantly through Cairo on Monday in a new show of force after the expiry of a government ultimatum to dismantle their huge protest camps.

Supporters of Egypt’s ousted President have dug in at their two Cairo sit-ins after security officials said police would besiege the entrenched protest camps within 24 hours, perhaps as early as Monday morning.

Global diplomatic efforts to resolve the political deadlock in Egypt following the Army’s removal of the country’s first democratically elected President Mohammed Morsi have failed, the presidency said Wednesday, holding the Muslim Brotherhood “full responsibility” for the impasse.

An Egyptian police official says that if followers of ousted President Mohammed Morsi abandon their protest sit-ins, this will allow his Muslim Brotherhood group to have a normal role in the political process.

At least 75 supporters of ousted Egyptian President Mohamed Morsi were killed in clashes with police in Cairo early on Saturday, doctors at an Islamist-organised field hospital said.

Egypt’s Army chief called Wednesday for mass rallies to back a crackdown on “terrorism and violence,” in comments quickly slammed as a “threat” by a senior Islamist who vowed to continue protests.

The family of ousted Egyptian President Mohammed Morsi Monday accused the powerful military of “abducting” the Islamist leader and vowed to take legal action against the Army chief.