After Jundallah terrorist ring carried out a bloody attack in southeastern Iran, Russian President Dmitry Medvedev expressed readiness to help Iran fight "terrorism".
"The fight against the threat of terrorism and the extremism wherever it comes from requires all countries to join their forces," Medvedev said in a letter of condolence to Iranian President Mahmoud Ahmadinejad on Monday, Press TV reported.
"We are ready to cooperate with the Islamic Republic of Iran to counter these threats," he added.
Medvedev said the attack quivered him with "indignation" and condemned "this new evildoing by extremists".
His remarks came after at least 42 people, including senior commanders of the Islamic Revolution Guards Corps (IRGC) were killed by an explosion in the borderline city of Pishin in Sistan-Baluchistan on Sunday.
The Pakistan-based terrorist group Jundallah, a closely affiliated with the notorious al-Qaeda organization, accepted responsibility for the deadly attack which occurred during a unity conference between Sunni and Shia tribal leaders.
The ring, led by Abdolmalik Rigi, has staged a torrent of bombings and terrorist attacks in Iran.
The Asia Times reported in May that al-Qaeda militants sought to establish an alliance with the exiled Jundallah to fulfill longstanding plans of creating a strategic corridor in the region and lay the foundation for joint regional operations in Afghanistan, Pakistan and Iran.
Another report posted by the US-based ABC News also revealed that the US officials had advised Jundallah to 'stage deadly guerrilla raids inside the Islamic Republic, kidnap Iranian officials and execute them on camera', all as part of a systematic objective to overthrow the Iranian government'.
In a recent interview with Press TV, Rigi's brother, Abdulhamid, confirmed that the Jundallah leader had established links with the US agents.
His brother said that in just one of his meetings with the US operatives, Rigi had received $100,000 to fuel sectarianism in Iran.