President of the Sudan, Omar al-Bashir, declared a national state of emergency, dismissed the federal government and fired all the governors of the states.
"I will announce the introduction of a state of emergency throughout the country for one year," Mr Bashir said in a televised address to the nation on Friday.
He also asked the parliament to postpone the changes to the Constitution, which will allow him to run another term.
Mr Bashir was at the center of anti-government protests in recent weeks.
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He said that the demonstrations were an attempt to destabilize the country and had previously insisted that it could only be change of government if it is determined through a ballot box.
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Demonstrations began with the reduction of subsidies for bread and fuel in December, but later turned into anger for Mr Bashir's 30-year rule.
More than 1,000 people are reported to have been detained after protests began. Human rights groups say more than 40 people were killed in clashes with security forces.
Earlier in the day, the head of the Sudanese National Security and Intelligence Service (NISS) said that Mr Bashir would resign, reports
. The protest organizers promised to continue the demonstration until Mr. Bashir left his post, reports AFP.
75-year-old Bashir initially dreaded the tone after winning the election several times after the coup in 1989.