After Jundullah accepts responsibility for the deadly attack in southeast Iran, President Mahmoud Ahmadinejad promises that the terrorists will receive a befitted response, Press TV reported.

"I promise that those who committed such criminal and inhuman acts will receive their response soon," Ahmadinejad said Sunday.

At least 30 people were killed and 28 others wounded in two separate terrorist explosions Sunday that targeted a unity gathering between Sunni and Shia tribal leaders in the borderline City of Pishin, near the Town of Sarbaz, in southeast Iran.

The Jundullah terrorist group, led by Abdolmalek Rigi, claimed responsibility for the attack that killed several top regional security officials such as the provincial commanders of the Islamic Revolution Guards Corps (IRGC), including Brigadier Nour-Ali Shoushtari and Brigadier Rajab-Ali Mohammadzadeh.

The explosion also claimed the lives of a group of tribal leaders and well known local figures of both Shia and Sunni communities.

In his message of condolence, President Ahmadinejad expressed grief at the criminal acts by agents who have links with foreign powers.

He called on Iranian authorities to identify the agents behind the terrorist act at the earliest opportunity and bring them to justice.

The Pakistan-based Jundullah has staged a torrent of bombings and terrorist attacks in Iran, one of which left at least 25 Iranians dead in early June. Jundullah militants are believed to be closely affiliated with the notorious al-Qaeda organization.

The Asia Times reported in May that al-Qaeda militants sought to establish an alliance with the exiled Jundullah 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.