And specifically this article from 2012... where the security chief Col. Latifi in Afghanistan is quoted..
"Every official I spoke to in Nimruz identified each of the attackers who were killed or captured as Iranian Baluchis. “They were all recruited at the same mosque in Zahedan,” Colonel Latifi told me. Zahedan is the capital of Sistan-Baluchestan, the Iranian province that borders Nimruz and Pakistan, and one of the poorest, least developed and most unstable parts of Iran. The mosque, according to Latifi, was similar to some madrassas in Pakistan that promote an extreme Islamist ideology and groom budding jihadists for deployment in Afghanistan. It was “sponsored,” Latifi said, by Iran’s Revolutionary Guards."
