Centre imposed President's Rule in Uttarakhand a day ahead of trust vote for Congress chief minister Harish Rawat on Monday.
According to a report president signed the proclamation under Article 356 of the Constitution in the morning.
Union Government had secured state governor K K Pauls report on situation in the state triggered by revolt of the Congress MLAs on March 18.
Prime Minister Narendra Modi had called an emergency meeting of the Union Cabinet in national capital late tonight to ponder upon options before the Centre, including that of President's Rule.
Earlier in the day , Rawat condemned the "threat" by the Centre to impose President's rule in the state hit by a political row , and said it would be a murder of democracy and not acceptable in a parliamentary system.
"Centre is threatening a state like Uttarakhand with President's rule. It is not acceptable in a Parliamentary system," Rawat was quoted as saying.