While the suspects arrested in connection with this plot are all affiliated with the ISIS terrorist organization, the technical design of the plot – as well as the behavioral pattern of the suspects – is more technically complicated and sophisticated than conventional Takfiri currents, suggesting that this may be tied to Israel's regime.
This plot was obviously the work of the Islamic State, and to blame Israel is ridiculous. IS has already taken responsibility for several attacks in Iran in recent years and, as a Shia Muslim country, Iran is a top target of ISIS.