Iran's foreign ministry and the Islamic Republic's embassy in Baghdad are seriously pursuing the case, Ghasemi said, in a message to slam the heinous attack.
Ghasemi described such premeditated and brutal terrorist acts as a result of the frustration of terrorists and in response to their successive failures
Such brutal and inhuman actions are not going to affect the determination of the Iraqi people and its government, neither could they disrupt the Islamic Republic's resistance and the joint relentless fight by Iran and Iraq against terrorism, he said.
At least 80 people were killed Thursday when a truck bomb exploded at a gas station in Shoumeli village, 120 kilometers southeast of Baghdad.
Most of the victims were Iranian Shia pilgrims, according to authorities in Iraq, who were returning home from the holy shrines in Iraq after Arbaeen rituals.
A representative of the Iranian Red Crescent Society in Iraq Hamid Kamali said on Thursday that the exact number of the Iranian pilgrims who were martyred during the attack in the Shoumeli village is not specified yet.
Director General of Iran's Red Crescent Society Ali Asghar Ahmadi said on Friday that extreme burn of the martyrs is a big hurdle on identifying them.
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