Amnesty International is warning that two death-row prisoners from Iran's Kurdish minority are at "imminent risk" of being executed.
The warning comes after the London-based rights watchdog said Iranian authorities had carried out 20 death sentences over the weekend.
In a statement on October 28, Amnesty said the surge in executions shows that the Iranian authorities "continue to rely on state-sponsored killing."
The statement also said the executions spark fears that two Kurdish minority prisoners on death row -- Zaniar Moradi and Loghman Moradi -- could be next.
The two were sentenced to death in 2010 for participating in armed activities with the Kurdish independence organization Komala and for the killing of the son of a senior cleric.
Amnesty quotes them as claiming they were tortured into confessing to the 2009 murder.