Iran’s currency has been in free fall since the outbreak of conflict with Israel, the rial losing around 12% of its value against the euro since Israeli attacks began on Thursday, unofficial exchange offices reported on Sunday.
According to reports from Tehran, large platforms that usually display detailed exchange rate movements were subject to censorship.
Currency traders reported that the authorities had intervened out of concern about further economic chaos. On the black market, one euro now costs more than 1 million riyals.
Tensions have soared since Israel launched a large-scale military offensive on Friday, hitting Iranian nuclear facilities, military leaders and energy infrastructure. Tehran has responded by launching flurries of missiles and drones at Israel, which continued overnight into Sunday.
Israel also launched a new wave of airstrikes on Tehran on Sunday, as attacks between the two regional powers continued for a third day and the death toll climbed.