Iran’s Revolutionary Guard: Riyadh masterminded assault on Tehran

Iran's Revolutionary Guard Corps issued a statement on Wednesday accusing Saudi Arabia of masterminding the coordinated attack earlier in the day on the Iranian parliament and the tomb of Ayatollah Khomeini. It alleged that the ISIS claim of responsibility for the assault, and the fact that the attack took place following US President Donald Trump's visit to Saudi Arabia, proved that Riyadh was involved.     
Earlier, the deputy commander of the IRGC, Brig. Gen. Hossein Salami, said "Let there be no doubt that we will take revenge for today's attacks in Tehran, on terrorists, their affiliates and their supporters." At least 12 people were killed in the assault.