A senior Iranian official has said that the recent deadly terrorist attacks in Tehran were conducted by the request of Saudi Arabia’s security services.

“The existing documents are proof of the US and Saudi Arabia’s continued manipulation of terrorism in the region and the world,” said Hossein Amir-Abdollahian, a special adviser on international affairs to the Iranian parliament speaker.

“Their strategy is to draw out regional crises in order to carry out their own agendas such as arms sales,” Amir-Abdollahian added.

On June 7, gunmen affiliated with ISIS carried out simultaneous assaults on Iran’s Parliament and the Mausoleum of the late Founder of the Islamic Republic Ayatollah Ruhollah Khomeini.

Iran has arrested dozens of terrorists since the attacks, which killed 18 people and injured 50 more.

Following the attacks, Iran’s Foreign Minister Mohammad Javad Zarif said his country had obtained intelligence, showing that Riyadh was “actively” propping up terrorist groups in Iran’s eastern and western borders.

In an act of retaliation, Iran’s IRGC launched multiple missiles towards Syria, targeting ISIS centers in the war-torn country’s Deir Ezzur.

“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 IRGC said in a statement.