The Muslim Brotherhood's Freedom and Justice Party is dominating Egypt's post-revolution political environment alongside conservative Islamist group al-Nour.
Mahmoud Hussein, secretary-general for the Muslim Brotherhood, said the organization was ready to form a government.
"We will announce the names of nominees when we are asked to form a government," he was quoted by the Egyptian Independent news agency as saying.
A source inside the Muslim Brotherhood told the news service the group was waiting for the Supreme Council of the Armed Forces or the Parliament to dissolve or vote out the Cabinet of Prime Minister Kamal al-Ganzouri.
A military official told the news agency on condition of anonymity there are no plans to dissolve the government until SCAF hands power over to a civilian administration by the end of June.
SCAF took control over the government one year ago Saturday after demonstrations forced President Hosni Mubarak from power after nearly 30 years in office.
Human Rights Watch said there's been a "disturbing assault" on the freedom of expression in Egypt since SCAF took control.
"Not only are direct critics of the military under physical and legal threat, but so are those who deliver these critical voices to the public," Joe Stork, deputy Middle East director for Human Rights Watch, said in a statement.
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