The military ouster of Egypt’s first democratically elected president came one year after he took office. The military also suspended the constitution, saying the action was necessary because of the risk of a general rebellion.

At least three supporters of the ousted president were killed by gunfire Friday. The deaths came as a crowd tried to march to the military housing where the ousted president is believed to be held. A spokesman for the Muslim Brotherhood Freedom and Justice Party said soldiers shot and killed the protesters. Egyptian soldiers denied that they had used deadly weapons against the protesters.

Also Friday, witnesses say soldiers opened fire on pro-Morsi protesters who were trying to march on the defense ministry headquarters.

Also in Cairo, thousands of Morsi supporters gathered in the Nasr City neighborhood. They denounced the military intervention and demanded that Egypt’s first democratically elected president be returned to power.

Early Friday, security officials said people they called “Islamist gunmen” attacked military and police checkpoints in the northern Sinai area. The attacks killed an Egyptian soldier and wounded at least two others.

Egypt's military declared emergency conditions in Suez and Sinai ahead of the planned Islamist protests.

The military and Egypt's former opposition groups have called for understanding and compromise as the military moves to restore democratic, civilian rule in Egypt. The military is also denying any campaign against the Muslim Brotherhood.