Hossein Amir-Abdollahian announced the information in a post on X, former Twitter, on Wednesday, hours after the explosions that took place near the burial site of Iran’s former senior anti-terror commander Lieutenant General Qassem Soleimani.
"Based on initial information obtained from official sources, the Foreign Ministry has begun [taking] its prompt legal and international measures through the United Nations," the top diplomat wrote.
The explosions left 103 people dead and 211 more injured.
According to IRNA, the first blast occurred some 700 meters from General Soleimani's burial place, and the second one about one kilometer away.
The first explosion occurred at 14:50 local time. The second one took place 10 minutes later, ISNA quoted Kerman Mayor Saeed Tabrizi as saying.
Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei has noted that those who had ordered and carried out the twin attacks would definitely face a fitting punishment and a harsh response.
President Ebrahim Raeisi has also vowed that those behind the "indiscriminate and cowardly" attacks would soon be brought to justice.
Amir-Abdollahian considered the tragedy to be a source of "sorrow and anguish."
He condoled with the survivors and the Iranian nation over the incidents, and wished the wounded "expedient recovery."
MNA/