Iranian authorities have rounded up at least 150 people in Tehran and in the Kurdish areas in the west of the country following the June 7 terrorist attacks in the capital, which claimed 18 lives.
The five young attackers who pledged allegiance to the Islamic State (IS) in a video released shortly after the attacks appear to have traveled from Kermanshah province to Tehran undetected in early June. The rare but deadly strikes targeted two of the most guarded locations in the capital: the parliament and the mausoleum of the founder of the Islamic Republic, Ayatollah Ruhollah Khomeini.