Iranian authorities are detaining relatives and threatening property seizures of opposition activists living abroad, according to multiple activists and rights organizations. The campaign appears aimed at silencing critics of Iran's government who have fled the country.

Several exiled activists told reporters that their family members have been detained in recent weeks. Hossein Razzagh, a former political prisoner now in Europe, said intelligence agents detained his brother Ali from his Tehran home on March 15. Behnam Chegini, based in France, reported his 20-year-old niece was held for a week after being taken from her parents' house in Arak. Activist Sareh Sedighi said her mother was detained from their home in Urmia last month.

Iran's judiciary has also begun seizing property of public figures critical of the government under an anti-espionage law that punishes activities deemed supportive of Iran's enemies. A judiciary spokesman said on March 31 that more than 200 indictments for confiscations have been issued or are being prepared. Among those affected is Iranian actor Borzou Arjmand, living in California, who learned from news reports that his assets had been confiscated.

Rights groups report deteriorating conditions as regional tensions continue. Iran Human Rights, a Norway-based organization, has documented several hundred detentions since late February, though the group says the actual number is likely higher. Among those detained is human rights lawyer Nasrin Sotoudeh, who was taken by intelligence agents from her Tehran home.

The detentions come as Iranian authorities have warned that any new anti-government protests will face lethal force. State media regularly reports arrests of individuals described as agents of foreign powers or hostile elements. Some activists say the pressure has intensified amid ongoing regional conflict involving Israel and the United States.

The situation has prompted new efforts to organize Iran's fragmented opposition abroad. Before the current tensions, some activists had begun planning an opposition conference in London called the Iran Freedom Congress, aimed at bringing together pro-democracy groups to push for political transition in Iran.