The group threatened to leak the "dirty nuclear project of the Mullahs’ regime," as it wrote, if it does not release political prisoners and protesters detained during the ongoing nationwide protests across the Islamic Republic within 24 hours.
"24 difficult and important hours for the Islamic Republic started from this moment," the hacker group wrote on Twitter.
Anti-government protests erupted in Iran last month after the death of Mahsa Amini, who was captured by Iran's "modesty police" for wearing a hijab improperly.
Amnesty International has said security forces killed at least 66 people in a crackdown after Friday prayers in Zahedan, in the southeast, on September 30, some of the deadliest unrest during five weeks of protests ignited by Amini's death.
This is a developing story.
