World leaders hailed the release of Burma's democracy icon Aung San Suu Kyi from years of house arrest Saturday but warned the country's junta not to restrict her, even as a senior government official insisted she was "completely free". This is a history in Burma, as military junta bows to democracy.

Suu Kyi

Burma's democracy icon Aung San Suu Kyi holds a bouquet of flowers as she appears at the gate of her house in Rangoon. World leaders have hailed the release of Burma's democracy icon Aung San Suu Kyi from years of house arrest but warned the military junta not to restrict her in other ways and called for all political prisoners to be freed.

US President Barack Obama said that "while the Burmese regime has gone to extraordinary lengths to isolate and silence Aung San Suu Kyi, she has continued her brave fight for democracy, peace, and change in Burma."

"She is a hero of mine and a source of inspiration for all who work to advance basic human rights in Burma and around the world," said Obama in a statement, using the country's former name.

While the United States welcomed Suu Kyi's release, it was "time for the Burmese regime to release all political prisoners," added Obama, in Japan for a regional summit, echoing sentiments aired by other world figures.

Secretary General Ban Ki-moon called Suu Kyi, a Nobel Peace laureate, "an inspiration" to the world, a UN spokesman said.

"The secretary-general expects that no further restrictions will be placed on her, and he urges the Burma authorities to build on today?s action by releasing all remaining political prisoners," said the spokesman.

"France will be extremely attentive to the conditions in which Madame Aung San Suu Kyi enjoys her refund liberty," French President Nicolas Sarkozy said in a statement issued by the Elysee Palace.

Any "restrictions on her freedom of movement and expression would constitute a new unacceptable denial of her rights," he said.

But a senior Burma official said no conditions were tied to Suu Kyi's release. "She is completely free -- there are no conditions at all," the official told AFP on condition of anonymity.

British Prime Minister David Cameron called her release "long overdue", branding her detention for 15 of the last 21 years a "travesty, designed only to silence the voice of the Burmese people."

"Aung San Suu Kyi is an inspiration for all of us who believe in freedom of speech, democracy, and human rights," he said. "Freedom is Aung San Suu Kyi's right. The Burmese regime must now uphold it."

Britain is the former colonial power in Burma, which achieved its independence as Burma in 1948, and Suu Kyi's late husband was British.

Desmond Tutu, chair of the group of retired senior statesmen known as The Elders, called Suu Kyi "a global symbol of moral courage" and said her release "offers hope to the people of Burma."

For his part, Surin Pitsuwan, secretary-general of the Association of Southeast Asian Nations (Asean) which includes Burma, told AFP he was "very, very relieved" at the news.

Pitsuwan said he hoped Suu Kyi would be able to play a role in bringing national reconciliation while the Japanese government urged Burma to take "further positive measures."

In Brussels European Commission head Jose Manuel Barroso called for Suu Kyi to be granted "unrestricted freedom of movement and speech" so she could "participate fully in her country's political process." He echoed the call for the release of political prisoners.

Similar reactions came from German Chancellor Angela Merkel, Australian Prime Minister Julia Gillard and the governments of Poland, Italy, the Czech Republic, Austria, Bulgaria and South Africa.

In Geneva, United Nations Human Rights Commissioner Navi Pillay called Suu Kyi's release "a positive signal" by Burma authorities and said she could "make a major contribution" in the transition to democracy and national reconciliation.

"I urge the authorities of Burma to now release the other 2,200 political prisoners as a clear sign that the new government intends to respect human rights and forge a new future for the country," Pillay said.

China, one of Burma's closest allies and a mainstay for the junta through trade ties, arms sales, and using its veto on the UN Security Council against sanctions, had no immediate reaction.

But the official Xinhua news agency, reporting her release, did describe Suu Kyi as "a noted political figure."

Rights group Amnesty International said Suu Kyi's release was not a "concession" by the regime and should not take attention away from other prisoners of conscience being held in "deplorable conditions".

Meanwhile, New York-based Human Rights Watch called the junta's move a "cynical ploy" to deflect criticism of its recent election.

"If the military government is serious about increasing political space after the elections then it will release all political prisoners immediately and unconditionally," said HRW official Elaine Pearson.