Amnesty International research shows how some of those detained are being held secretly where they are vulnerable to a range of abuses, including torture or being killed in custody.
An ethnic Uighur website manager who was sentenced to seven years in jail in China after a secret trial is the latest in a series of Uighur writers imprisoned for peaceful expression of cultural or political views.
Journalists covering potential protests inspired by events in the Middle East and North Africa have been beaten or detained by security officers.
Authorities say that the human rights activist was caught 'red-handed keeping and distributing documents' calling for the overthrow of the government.
The members of the Socialist Workers League, a small association that espouses socialism, were found guilty of "propagating or instigating a rebellion against the State."
Amnesty International urges the Chinese authorities to stop detaining and harassing more than 100 activists targeted in an apparent attempt to block anti-government demonstrations inspired by protests across the Middle East.
Vi Duc Hoi is sentenced to eight years for "spreading anti-government propaganda" after he posted articles on the internet calling for democracy.
Amnesty International renews its call on the Chinese authorities to release an ethnic Uighur prisoner of conscience jailed on separatism charges after his family reported that he is being tortured in a Xinjiang prison.
Prominent Inner Mongolian rights activist Hada, his wife and son have disappeared into detention in an unknown location.
Australia's new policy to transfer prisoners it holds in Afghanistan to Afghan and United States forces could put detainees at risk of torture and ill-treatment.
A profile of this year's Nobel Peace Prize winner by China specialist Jean-Philippe Béja.
After attending the ceremony Amnesty International has welcomed the awarding of this year's prize to jailed Chinese human rights activist Liu Xiaobo.
An ailing Chinese AIDS activist is at risk of being detained indefinitely on trumped up charges due to a legal loophole.
Bai Dongping is held on the charge of "incitement to subvert state power" after he posted a photograph of the 1989 pro-democracy protests on the web.
Security forces use excessive force against demonstrators taking part in a national day-long strike.
Mushtag Ahmad Sheikh has been detained since his arrest in April for allegedly taking part in anti-government protests.
Online activist Cheng Jianping was sentenced after having retweeted a satirical suggestion that the Japanese Pavilion at the Shanghai Expo be attacked.
Amnesty International welcomes the release of Aung San Suu Kyi, but calls on the government of Myanmar to immediately release all of the prisoners of conscience in the country.
The Myanmar government’s attacks on the freedoms of expression, peaceful assembly, and association compromise the country’s first elections in 20 years, says Amnesty International.
Amnesty International condemns the nine and seven-year prison sentences given to three activists in Viet Nam for carrying out their legitimate work on labour rights.