Amnesty International has called for Uzbekistan not to execute two prisoners it says were tortured to confess to murder.
The London-based human rights group said Mr Ikram Mukhtarov (24) and Mr Yusuf Zhumayev (21) faced imminent execution after exhausting all appeals for their murder convictions.
The UN Human Rights Committee has also urged Uzbek authorities to stay the executions while it examines whether international conventions were violated in the cases, Amnesty said.
However, the Uzbek government has in the past ignored such appeals in at least 12 cases, the group said.
Mr Zhumayev was convicted in southern Surkhandarya region in April 2003 for murdering his brother's wife and his niece and nephew earlier that year.
However, relatives said he was hung upside down and beaten and also tortured with electric shock, and Mr Zhumayev testified about the abuse at his trial, according to Amnesty.
His brother, the husband and father of the victims, has also said Mr Zhumayev had no motive for the crime, the group said.
Mr Mukhtarov was sentenced to death on May 24th in Tashkent, convicted for murdering a man and woman in May 2001. He told the court his confession was extracted using torture, but the court ignored the statements, Amnesty said.
Uzbekistan has repeatedly faced accusations of torture of detainees, and a UN report found the practice was "systematic" in the country's prisons. Uzbek officials say they have drafted a plan to address the problem.
AP