Iranian presidential candidate Mohammad Baqer Ghalibaf stated that all of Iran's serious social issues originate from the eastern part of the country.

He added, "We must build a wall on the eastern border with Pakistan and Afghanistan to ensure its security."

Ghalibaf attributed some of the crimes and social issues in Iran to the presence of undocumented migrants.

In a debate broadcast on Thursday by Iran's state TV, Ghalibaf said, "Today, undocumented foreigners cause serious social issues in the areas of drugs, employment, and divorce."

As the Speaker of the Parliament and one of the main presidential candidates, Ghalibaf has made expulsion of illegal migrants, mostly Afghan, a part of his election campaign.