Iranian authorities have arrested seven suspects for supporting the Islamic State-claimed dual attacks on Iran’s parliament and the shrine of Ayatollah Ruhollah Khomeini that killed 17 people in Tehran.

State Television’s website iribnews.com quoting chief justice of Alborz province Ahmad Fazelian, said the agents who were supporters of the two terrorist groups and had full coordination with them, were arrested and they were delivered to Tehran’s judicial and security authorities…