Chief of Iranian General Staff Major General Mohammad Hossein Baqeri has accused the US of transferring Daesh terrorists to Afghanistan after the jihadist group's defeats in Syria and Iraq.
"The Americans point to [the existence] of tensions in the southwest Asia region as an excuse for their presence in the region," Baqeri told reporters in Tehran as quoted by Tasnim news agency.
According to the top official, the US has been moving terrorists to Afghanistan from Syria and Iraq as Daesh and other terrorist groups lost territories there.
The statement of the official comes a day after Iraqi government spokesman confirmed that the US had begun to draw down its forces, following Baghdad's declaration of victory over Daesh.
The US has been accused numerous times of providing various forms of support to Daesh and other terrorist groups, operating in the region.
In mid-December, the Russian Ministry of Defense accused the US-led coalition of using the al-Hasakah-based camp to train jihadist militants who had been reorganized into the so-called "New Syrian Army."
In most recent case that occurred in late-December, Syrian news agency SANA reported that US helicopters evacuated Daesh leaders from several areas across the Syrian province of Deir ez-Zor to the country's northeast.
The US-coalition, however, has denied all accusations.