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.
Journalists covering potential protests inspired by events in the Middle East and North Africa have been beaten or detained by security officers.
Amnesty International calls on UK government to raise concerns about the killings with the Prime Minister of Bangladesh Sheikh Hasina who visits the UK this week.
Amnesty International is calling on the Bangladeshi government to immediately investigate allegations that a MP for the opposition Bangladesh Nationalist Party has been tortured while in police custody.
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.
Security forces use excessive force against demonstrators taking part in a national day-long strike.
Amnesty International today called on the Saudi Arabian authorities to protect domestic workers from abuse, following the reported discovery of the mutilated body of an Indonesian woman in a skip.
Leaders urged to improve accountability for Afghan and international military forces and tackle arbitrary detention and torture.
Amnesty International today urged the Saudi Arabian King to halt the execution of a young Sri Lankan woman who has lost her appeal against a death sentence for a murder committed when she says she was 17.
US authorities urged to address human rights violations committed against Canadian national in spite of him pleading guilty to the charges against him at a Guantánamo military commission.
The Indonesian government should initiate an independent investigation into reports of torture and other ill-treatment in Papua over the last two years, Amnesty International has said.
The new Bill, which will address many forms of torture routinely employed by Indian police and prison officials, is to be considered by the Select Committee of the Upper House of the Indian Parliament.
Raymond Manalo recalls the horror of his enforced disappearance and torture at the hands of Philippines security forces.
The Emergency Decree and Internal Security Act grant authorities with extraordinary powers, which have often been abused to block the expression of peaceful dissenting views.
Eight men and two women convicted of 'gathering a crowd to disturb social order' following a Feb 2009 demonstration outside a court in the southwestern province of Sichuan.
Amnesty International has urged Indian authorities to carry out an effective investigation into a video clip that appears to show detainees in Kashmir being stripped and humiliated by security forces.
Yusuf Sapakoly, 52, died of kidney failure after being refused access to adequate medical assistance by prison authorities.
Three men who were tortured and jailed after their forced return from Australia, are at risk of further abuse when they are returned to prison from hospital.
RELA's Director-General says the civilian volunteer corps is aiming to expand its membership by a million agents by the end of the year.
The Philippine government should ensure that police officers responsible for torture shown in a video broadcast in the national media are brought to justice, Amnesty International said on Wednesday.