Iranian Ministry of Health says the much more contagious Delta variant of the Coronavirus was causing a wave of deaths in Iran with new highs almost daily.
According to the ministry on Monday, there was a record of 655 deaths within the past 24 hours, 35 more than the peak the day before.
Over 41,000 new infections were registered in the same period.
This brought the total number of Coronavirus-related deaths in the country to more than 98,000, and the number of infections to almost 4.5 million.
To stop the wave of deaths, the Iranian Government has again imposed a nationwide lock down as at Monday.
The country has been hit particularly hard by the pandemic, partly because the economic crisis and U.S. sanctions made it much more difficult to import vaccines.
The vaccination campaign for the more-than 83 million people in the country was therefore making slow progress.
So far, only 5 per cent of Iranians have been fully vaccinated.
dpa