The Army said operations “to cleanse the Sinai of terrorism” continue. Authorities seized weapon caches and arrested suspects linked to recent attacks in the Sinai. Gunmen killed a policeman in Port Said. Cameras may be installed at tourist sites to help deter attacks by Islamist militants. The interim government revoked the permit for the Muslim Brotherhood’s NGO. A security source said the attackers of a security building in El Tour had participated in Muslim Brotherhood sit-ins. The Interior Minister will soon name those behind the assassination attempt on him, which Ansar Jerusalem has claimed. Muslim Brotherhood supporters at Cairo University protested against the government. General al Sisi said a senior Muslim Brotherhood official had warned him of violent Islamist attacks if Mohammed Morsi were overthrown.