The Iranian regime declared three days of "public mourning," the state-run Islamic Republic of Iran Broadcasting confirmed on Sunday evening.
The mourning will honor "the martyrs of the Iranian national resistance battle against terrorists supported by the US and Zionist regime [Israel]."
The "terrorists" referred to in the announcement are the protesters who have been denouncing the government nationwide for the past two weeks.
Additionally, rallies condemning the protesters are scheduled for 2 p.m. Monday at Tehran's Islamic Revolutionary Square, the semi-official Islamic Revolutionary Guard Corps-linked Tasnim News Agency reported.
Other rallies will be held across the country, Tasnim reported.
Iranian state TV broadcast funeral processions in western cities such as Gachsaran and Yasuj for security personnel killed in protests.
State TV said 30 members of the security forces would be buried in the central city of Isfahan and that six more were killed by "rioters" in Kermanshah in the west.
According to its latest figures - from activists inside and outside Iran - US-based HRANA said it had verified the deaths of 490 protesters and 48 security personnel, with more than 10,600 people arrested in two weeks of unrest.
However, the number is estimated to have reached over 2,000 killed.
Iran has not given an official toll, and Reuters was unable to independently verify the tolls.
The protests began on December 28 in response to soaring prices, before turning against the clerical rulers who have governed since the 1979 Islamic Revolution.
US military warns Trump it needs more time to prepare for Iran strikes
Earlier on Sunday, senior officials in the US defense establishment warned US President Donald Trump that the military needs more time to prepare for strikes against Iran, British outlet The Telegraph reported on Sunday.
Trump is reportedly contemplating military action, including being presented with a range of targets, including leaders of Iran's security services, which have been responsible for clamping down on protesters, the outlet noted.
Alex Winston and Reuters contributed to this report.