The true death toll is difficult to verify, due to an internet blackout in Iran and the lack of independent reporting. The US-based Human Rights Activists News Agency (HRANA) said it confirmed more than 6,000 protesters dead, while Norway-based Iran Human Rights said the final toll could exceed 25,000. Iranian authorities said at least 3,117 people were killed, but claimed most were members of security forces or bystanders, blaming the deaths on "rioters."