Iranian President Mahmoud Ahmadinejad called for uprooting terrorism in Iran and Pakistan.
"Uprooting terrorism is demanded by Iranian and Pakistani nations," said Ahmadinejad in a phone call with Pakistani counterpart Asif Ali Zardari on Monday night, ISNA reported.
"Those who orchestrated the attack (recent bombing in Iran) are neither Muslim nor have faith in any religion," Iranian resident added.
A bomb explosion in the southeastern Iranian city of Chabahar on Tuesday night killed at least 33 people and wounded 83 other.
The blast took place outside the Imam Hossein Mosque with the terrorist militant Sunni group Jundullah claimed responsibility for the bombing.
The attack reportedly targeted individuals marking Ashura, the Shiat mourning day for martyr of Imam Hossein, the third Shiite Imam.
A number of women and children were among the dead.
Iranian officials have said that the US and Zionist intelligence services have been behind the attack.
Ahmadinejad also called for Zardari to assign intelligence services of the country to arrest and hand over terrorist agents to Iran.
Iranian President said security services of the country are ready for transfer of intelligence and bilateral cooperation for fighting terrorism.
Zardari on his part assured that his country withdraws no effort for uprooting terrorism.