Nejad Jahani, a senior official with the organization, said at least 45 people are still missing in Tehran and three other provinces following recent floods that damaged at least 20,000 homes.
More than 20 provinces, including the province of Tehran, have been affected by flooding caused by heavy rains, according to the semi-official Fars news agency. Several airports and major highways were closed and thousands of people were evacuated.
State media reported that Iranian President Ebrahim Raisi has instructed ministers and governors to prepare measures that will minimize flood damage as the Iranian Meteorological Organization warned that rain will continue in several provinces.
Iran has been fighting deadly floods and landslides for two weeks now, including in the south of the country. The Red Crescent said damage in the southern province of Fars was caused by flooding from a dam on the Rodbal River near the town of Estaban.
Scientists say the climate crisis is making flash floods like those seen in Iran this week more likely because while more intense evaporation leads to more droughts, warmer air can hold more water vapor, causing extreme downpours.