Tehran: At least 538 people have been killed in the ongoing crackdown on nationwide protests in Iran, with activists warning that the real toll could be much higher as communication lines remain severely restricted.

The figures were released by the U.S.-based Human Rights Activists News Agency (HRANA), which said more than 10,600 people have been detained during nearly two weeks of demonstrations. HRANA, which relies on a network of supporters inside Iran, reported that among the dead are 490 protesters and 48 security personnel.

With internet shutdowns and phone disruptions across the country, independent verification has become increasingly difficult, while authorities in Tehran have so far not released an official casualty count.

Rights groups say the blackout has limited the flow of information, allowing hard-liners within security forces to act with greater impunity. Despite restrictions, protesters again gathered in major cities, including Tehran and Iran’s second-largest city, on Sunday.

U.S. response and regional tensions

U.S. President Donald Trump expressed support for demonstrators, posting that Iran was “looking at freedom” and that the United States “stands ready to help.”

Reports suggest Washington is considering a range of options, from cyber operations to potential military action, although no decisions have been announced.

Iran, meanwhile, issued sharp warnings. Parliamentary speaker Mohammad Baqer Qalibaf said that in the event of an attack on Iran, U.S. military bases and Israel would be considered “legitimate targets.”

He added that Iran would not limit itself to responding only after an attack but would act on “objective signs of a threat,” prompting lawmakers in parliament to chant “Death to America.”

Situation remains volatile

Analysts note it remains unclear whether Iran intends to launch strikes, particularly after heavy losses to its air-defense systems in the June conflict with Israel. Any move toward war would depend on Supreme Leader Ayatollah Ali Khamenei, now 86.

The U.S. military says its forces in the region are positioned to defend American assets and allies, while Israeli officials said they are “watching closely” the escalating tension.