Iran has sent additional units of special forces to fortify its northern border with Iraq and clamp down on what it says is infiltration by Kurdish opposition groups, Iranian state media reported on Friday.

Gen. Mohammad Pakpour, chief of ground forces of the paramilitary Iranian Revolutionary Guard, said 'armored and special forces' units had been deployed to west and north-west provinces to bolster existing border security, the official IRNA news agency reported.

The deployment aims to prevent infiltration and the smuggling of weapons in the north by Kurdish opposition groups exiled in Iraq that Tehran claims is orchestrating country-wide anti-government protests. It is a claim the Kurdish groups deny and to date Iran has not provided any evidence to support it.

Iran has several military bases near the Iraqi border and forces have been present there on a rotating basis for decades.

The troop movement also comes after Iraq issued directives for boosting security along its side of the border to prevent further bombardment by Iran, according to a statement issued by Iraq's military spokesman Maj. Gen. Yahya Rasool. Kurdish opposition groups have bases in Iraq's Kurdish-run northern region.

Earlier this week, Iranian officials were quoted in state-run media as saying they did not have plans to conduct a ground military operation to root out opposition groups from the bases, despite having reportedly threatened to do so during the visit by top general Esmail Ghaani to Baghdad last week.

Country-wide protests engulfed Iran in September following the death of a young woman in police custody for violating the Islamic Republic's strict dress code for women. The protests have become one the greatest challenges to Iran's theocracy since the chaotic years after its 1979 Islamic Revolution.

Mahsa Amini, 22, died Sept. 16, three days after her arrest by Iran's morality police. Iran's government insists Amini was not mistreated in police custody, but her family says her body showed bruises and other signs of beating after she was detained.