At least 490 demonstrators have been killed in the mass protests in Iran over the last 15 days, the US-based Human Rights Activists News Agency (HRANA) told US television station CNN on Sunday.
Around 10,700 people have reportedly been detained, CNN reported.
The information could not initially be independently verified.
The actual death toll is likely to be higher, as Iranian authorities have almost completely blocked the population's access to the internet and phone lines.
Communication with the outside world is only possible via the Starlink satellite system, provided the necessary terminals have been brought into the country illegally.
The protests were triggered about two weeks ago by the country's crippling economic crisis, but quickly turned into political demonstrations against the apparatus of the Islamic Republic.
LATEST POSTS
- 1
'Wicked: For Good' was filmed at this surreal National Park in Egypt - 2Australia PM tries to reassure public as panic buying sees fuel demand surge 400% in some regions
- 3Report: Thailand strikes deal with Iran for safe passage of Hormuz
- 4My prescription costs what?! Pharmacists offer tips that could reduce your out-of-pocket drug costs
- 55 Movies That Leaving an Imprint with Inventive Innovation
- Josh Duhamel's secret to the good life at 53? Wolverine peptides, ditching Hollywood and having another baby.
- Revealing the Specialty of Food Matching: Improving Culinary Encounters
- 2024 Style: The It-Things You Want in Your Closet
- Surveys of Music Collections by Film Stars
- 'Dancing with the Stars' semifinals: How to watch Episode 10 tonight, where to stream, who's left and more
- Merz: 80% of Syrians in Germany should return in three years
- A new mom skipped a routine appointment. An infected cut led to a devastating diagnosis
- China bans storing cremated remains in empty 'bone ash apartments'
- If you want a true taste of Italian paradise, head to Favignana
