Mr Abdallahi was overthrown in August
Mauritania's deposed President, Sidi Mohamed Ould Cheikh Abdallahi, has been released from house arrest by security forces who overthrew him in August.
He was taken from his home town of Lemden, where he had been under house arrest, to his house in the capital, Nouakchott, where he was freed.
The government says Mr Abdallahi is now free to travel and make speeches.
There has been intense international pressure on the coup leaders to return the country to democracy.
France and the US had cancelled their aid, pending Mr Abdallahi's release.
The African Union also suspended the country following the 6 August coup.
Mauritania's communications minister, Abdulrahman Ould Mein, told the BBC's Focus on Africa that the former president is now a free man.
"He is free, he can travel, he can call, he can give speeches, like any citizen of this country," he said.
Mr Abdallahi became Mauritania's first democratically elected leader in 2007 after a coup two years earlier, partly instigated by General Mohamed Ould Abdelaziz.
On 6 August, Mr Abdallahi, as president, tried to dismiss four senior army officers, including Gen Abdelaziz, the head of the presidential guard, who responded by launching the coup.
It came after a fortnight of political crisis following a vote of no confidence in the cabinet.
Gen Abdelaziz appointed a transitional government to stay in power until new elections, to be organised in late 2009.
Mauritania has a long history of coups, with the military involved in nearly every government since its independence from France in 1960.
Sidi Ould Cheikh Abdallahi.

Mauritania's President Sidi Ould Cheikh Abdallahi has been freed "without conditions" from house arrest by the military junta on Sunday.

Sidi Mohamed Ould Cheikh Abdallahi (Arabic: سيدي محمد ولد الشيخ عبد الله) is a Mauritanian politician who served in the government during the 1970s, and after a long period of absence from politics he won the March 2007 presidential election, taking office on 19 April 2007. He was deposed in a military coup d'etat on August 6, 2008. 

He was removed from Lemden to his soldiers guarded private residence in Nouakchott (Arabic: نواكشوط or انواكشوط), the Capital and by far the largest city of Mauritania. It is one of the largest cities in the Sahara. The city is the administrative and economic centre of Mauritania.

Sidi's release is a result of protracted and intense international pressure on the ruling military High Council of State headed by General Mohamed Ould Abdel Aziz, to restore constitutional rule to the nation. France and the US had canceled their aid, while the African Union has also suspended the country due to the 6 August coup d'état. But the leaders still refused to reinstate Sidi, amid the demands of the EU, the United States and other major donors.

Nouakchott.
Reuters has reported that "the EU says it will avoid sanctions that would hurt Mauritania's 3 million people, and continues to pay Nouakchott over $100 million a year for fishing rights, underpinning the state budget." Further, the United States on Friday announced it would cut trade benefits for Mauritania as of January 1. 

It is expected that Sidi will be allowed to participate in a "national consultation meeting" on December 27. But in an interview by the French newspaper Le Monde, he said that "participating in the December 27 talks would be to legitimise the coup d'état".