Iran's Foreign Ministry has invited Pakistani Ambassador to Tehran Noor Mohammad Jadmani to protest the transferring of five abducted Iranian border guards to Pakistan, Press TV reported.
Five Iranian border guards were abducted in Jakigour region in Iran's southeastern province of Sistan and Baluchestan on February 6 and transferred to the Pakistani territory.
The Jaish-ul-Adl terrorist group has claimed responsibility for the kidnapping of the Iranian border guards.
The director general of West Asia Office of Iran's Foreign Ministry on Sunday invited the Pakistani envoy and conveyed the Islamic Republic's "displeasure and official protest" to him over the terrorist attack and the abduction of Iranian border guards.
The Iranian official pointed to several terrorist attacks along Iran's border with Pakistan over the recent months and called on Pakistani officials to guarantee the safe return of the border guards to Iran.
The Foreign Ministry official also urged the Pakistani government to hand over the perpetrators of the terrorist act to Tehran and to take serious measures to prevent the recurrence of such incidents in the future.
The Pakistani diplomat, who was handed an official protest note from Iran during the meeting, expressed regret over the terrorist operation.
Jadmani said he would convey Iran's message to Islamabad to pursue the issue.
On October 25, 2013, the Jaish-ul-Adl group killed 14 Iranian border guards and wounded six others in the border region near the city of Saravan in Sistan and Baluchestan Province.
In a letter to the president of the UN Security Council on October 28, 2013, Iranian Ambassador to the UN Mohammad Khazaei said evidence indicates that the Jaish-ul-Adl terrorist group had carried out the terrorist attack by infiltrating Iran's eastern borders from Pakistan.
In February, Iran and Pakistan signed a security agreement, under which both countries are required to cooperate in preventing and combating organized crime, fighting terrorism and countering activities that pose a threat to the national security of either country.
Iran has repeatedly called on its neighbor to commit to the terms of the agreement.