The protests, which occurred on Wednesday and Thursday, are the largest since 2022 but have not matched the intensity or scale of those following Mahsa Amini's death.
A volunteer from the paramilitary Revolutionary Guard's Basij force was killed, and 13 other security personnel were injured, with authorities blaming 'rioters' for the death.
Officials attribute the unrest to significant economic pressures, including inflation and the rapid depreciation of the Iranian rial, which has fallen to 1.4 million rials to the US dollar.
The government has responded with arrests, including 20 in Kouhdasht, and a public holiday was declared, possibly to deter further gatherings.