The Fars news agency is reporting that at least one child was killed in the strike on the residential building in the city of Khorramabad, located west of Tehran, according to Al Jazeera.
Earlier, it had been reported that the air raid had destroyed at least one building.
A video clip posted by Fars shows frantic scenes as rescue workers and residents dig through the rubble to look for survivors. A woman told the agency that an elderly woman was living in one of the houses hit in the attack.
According to Fars, several people were wounded. The exact number of dead and wounded is not yet clear.