Iranian investigations into the attack are increasingly focusing on a group of radicalized Iranian Kurds. But security sources said they believed three of the other four attackers were also Iranian Kurds. A safe house in Iranian Kurdistan was also raided, and suicide vests, weapons and bomb-making equipment were found, the Intelligence Ministry reported. But with the evidence becoming increasingly clear that the assaults were carried out by Iranian Kurds, there are concerns that ethnic tensions could mount. “I feel that if there was more political openness in Iranian Kurdistan, more dialogue with us, we would not witness the rise of these extremist groups.”

Source: New York Times June 11, 2017 19:08 UTC