The blackout has sparked fears among activists that authorities are now violently cracking down on the protests, with less chance that the proof will reach the outside world.
According to a report by the Iran Human Rights Activists News Agency, the death toll in the protests rose to 65, Anadolu reported.
The report added that protests took place in 512 locations in 180 cities in all 31 provinces, resulting in the deaths of 50 protesters, 14 law enforcement and security officials, and one government-affiliated civilian.
Demonstrations also left dozens injured and 2,311 detained. The injuries were largely caused by pellet shots and plastic bullets, according to the report.
Authorities have not issued a statement about those killed or injured.
Amnesty International said it was analysing “distressing reports that security forces have intensified their unlawful use of lethal force against protesters” since Thursday in an escalation “that has led to further deaths and injuries”.