Sudan President Omar al-Bashir has been ousted and arrested.
In a televised address, the country's Defence Minister Awad Mohamed Ahmed Ibn Auf said the leader has been arrested and kept in a safe place.
"The supreme committee decided to implement what was not in the mind of other people and for a transitional period of two years the armed forces will take power with the representation of the people to pave the way for the people," he said, announcing that an election will be held at the end of the period.
"For a long time, examining what's going on in the state and the corruption that is going on... the poor are poorer and the rich are still rich and there are no equal chances for the same people."
The Sudani airspace and border crossings will be closed for 24 hours until further notice, he said, adding that a state of emergency will be in place for three months.
Earlier, Sudan's National Intelligence and Security Service announced the release of all political prisoners across the country.
Thousands have been camping outside the army headquarters.
U.S. President Donald Trump fired General Timothy Haugh as director of the National Security Agency on Thursday, according to two officials familiar with the decision, and congressional Democrats denounced the removal of the nonpartisan official from a top security post.
Israel stepped up airstrikes on Syria, declaring the attacks a warning to the new rulers in Damascus as it accused their ally Turkey of trying to turn the country into a Turkish protectorate.
The Trump administration moved forward with the sale of more than 20,000 US-made assault rifles to Israel last month, according to a document seen by Reuters, pushing ahead with a sale that the administration of former president Joe Biden had delayed.