Iran's Islamic Revolution Guards Corps launched multiple missile strikes at ISIS centers in Syria's Deir Ezzur to retaliate the June 7 twin terrorist attacks in Tehran, the IRGC said in a statement issued on Sunday, adding that the mid-range missiles were fire from bases in Western Iran.

"A number of mid-range ground-to-ground missiles fired from the IRGC Aerospace Force bases in Kermanshah and Kurdistan provinces targeted the Takfiri terrorists and struck them with lethal and crushing blows in this operation," the statement said.

The statement further added that according to IRGC intel and reports showed that "a large number of Takfiri terrorists have been killed and their equipment, systems and weapons have been destroyed" in the operation.

The IRGC also stressed that the missiles strikes were a retaliation for the ISIL's twin terrorist attacks on the Iranian parliament and the holy shrine of the late founder of the Islamic Republic, Imam Khomeini, on June 7 that killed 17 civilians and an IRGC guard member.