Grand Bazaar of Tehran, a major hub for the country's economy, has been closed for two weeks following the sharp rise in the number of COVID-19 cases across Iran.
The authorities have also announced the suspension of other businesses, excluding the suppliers of basic services and commodities, for two weeks.
According to the Head of Tehran Chamber of Guilds, Nodeh Farhani, "the heads of the unions have been informed to close the Tehran market and guild for two weeks, starting from Saturday."
Iran reported 258 deaths from COVID-19 in the past 24 hours, the highest daily toll since early December.
That brings the total number of fatalities from the coronavirus to 64,490 in Iran, the worst-hit country in the Middle East.
Health ministry spokeswoman Sima Sadat Lari told state TV that 21,063 new cases were identified in the past 24 hours, taking the total number of identified cases since the pandemic began to 2,070,141.