The deteriorating health of China's best-known political prisoner was immediately met with dismay and anger by the country's beleaguered community of rights activists and lawyers, who called it a blow to the democracy movement.
Liu, 61, is receiving treatment at a hospital in the northeastern city of Shenyang, lawyer Mo Shaoping told The Associated Press.
Liu was diagnosed on May 23, and prison authorities in a statement said Liu was granted a medical parole and placed in the care of cancer experts, although it was not clear exactly when he was transferred to the hospital.
The clip has been shared in circles of supporters and verified by the couple's friends, who said she was at the hospital.
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Liu's supporters and international human rights advocates are urging China to provide the best care to Liu and allow him to seek medical treatments abroad.
"The Chinese government's culpability for wrongfully imprisoning Liu Xiaobo is deepened by the fact that they released him only when he became gravely ill," said Sophie Richardson, China director at New York-based Human Rights Watch, in a statement. .
Liu, a literary critic and China's most prominent democracy campaigner, was sentenced to 11 years in prison in 2009 after being convicted of inciting state subversion for writing and disseminating Charter '08, a manifesto calling for an end to single-party rule.
The following year, he was awarded the Nobel Peace Prize by a Norway-based Nobel committee, which cheered China's fractured, persecuted dissident community and brought calls from the US, Germany and others for Liu's release, but also infuriated Beijing. In April, Beijing finally normalized relations with Oslo after a six-year hiatus.
It was unclear exactly what treatment Liu was receiving but as of 10 days ago his condition was stable, Mo said, citing Liu's family. He noted, however, that medical parole is only granted to prisoners who are gravely ill and unable to be treated at the prison's medical facilities.
"I don't think he will be allowed to meet with people other than close relatives," he added.
At Liu Xia's apartment building in Beijing, AP journalists were accosted Monday by half a dozen plainclothes and other security officers and physically blocked from going beyond the first floor.
Geng Shuang, a spokesman for China's foreign ministry, said yesterday he was not aware of the latest development in Liu's case.
Activists have also been alarmed by Liu Xia's gradual descent into depression after the soft-spoken poet and artist was forcibly sequestered by state security at home during her husband's imprisonment.