“Unfortunately, because of threats and insecurity in several areas in Afghanistan, we are witnessing a growing flood of Afghan migrants,” Ali Osat Hashemi was quoted as saying by Iranian news agencies.
Hashemi said all provinces in the country must be prepared for the arrival of Afghan migrants.
“We must take further steps” to deal with the influx, he said.
Iran has been hosting more than 2 million registered and unregistered refugees from Afghanistan.
Some of the illegal refugees have been deported back to their country.