The statement offered sincere condolences to the families of the victims, and wished the injured a speedy recovery.
A suicide bomber killed at least 27 members of Iran's elite Revolutionary Guards on Wednesday.
Saudi Arabia said on Tuesday that it and Bahrain had added Iran's Revolutionary Guard Corps and senior officers from its Quds Force to their lists of terrorism.
Iranian Supreme Leader Ayatollah Ali Khamenei accused U.S.-backed Gulf Arab states of carrying out a shooting attack on a military parade that killed 25 people.
Hassan Rouhani vowed a "crushing" response after assailants sprayed a crowd with gunfire, shooting dead at least 29 people including women and children.
Iran test-fired a short-range anti-ship missile in the Strait of Hormuz during naval drills last week.
The United States believes Iran has started carrying out naval exercises in the Gulf.
The U.S. Navy stands ready to ensure free navigation and the flow of commerce, the U.S. military's Central Command said on Thursday.
The Iranian Resistance asked on Friday the UN Security Council to defend the legitimate and inalienable right of the Iranian people.
Three members of Iran's intelligence forces were killed in clashes in the western city of Piranshahr on Wednesday
U.S. President Donald Trump tweeted Saturday video portions of his speech in the UNGA, referring to the street protests hitting Iran for the third day.
Iran's Revolutionary Guards have arrested at least 30 dual nationals during the past two years, mostly on spying charges.
Engineers on a key oil processing facility from two major fields in the Kirkuk area of predominantly Sunni Kurdistan, had fled, fearing the military advance.
Iran said on Tuesday that U.S would be "joining the terrorists' camp" if it chose to designate its elite Revolutionary Guards (IRGC) a terrorist organisation.
Iran promised on Monday to give a "crushing" response if the United States designated its elite Revolutionary Guards as a terrorist group.
ran's Revolutionary Guards clashed with a group of militants in the northwest of the country, killing two of them.
Qatar has allowed Iranian military troops to deploy across the country in a kind of provocation to the Arab quartet states.
Former U.A.E. security head hinted that another emir will take over in Qatar in the case that current ruler Tamim bin Hamad’s regime does not acquiesce .
Al-Ruwais Commercial Port in Qatar received supply trucks from Iran's Revolutionary Guard to aid the Gulf emirate in the boycott imposed by its Arab neighbors.