The men sent to gallows at the prison in the city of Kerman on Wednesday were identified as Allahnazar S, Rahmatollah S, Abdollah S, Saleh H, Nematollah S, said the report.
They had been convicted of trafficking more than a tonne of opium, ILNA said, adding they were also found to be in possession of a number of military-grade weapons.
Kerman province lies on one of the major transit routes for narcotics smuggled into Iran from its neighbours Afghanistan and Pakistan to Western countries.
Murder, rape, armed robbery, drug trafficking and adultery are punishable by death in the Islamic republic, which has one of the highest annual execution counts in the world, alongside China, Saudi Arabia and the United States.
Human rights watchdog Amnesty International has condemned the executions, but Tehran says the death penalty is essential to maintain law and order and that it is enforced only after exhaustive judicial proceedings.
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Iranians are sick of the iranian regime!
@Jat: But name doesn't sound Pakistani. Don;t be so stupid all the time.
Strong steps taken by a country to curb crime and send out a message. Go Iran
Let me make an educated guess - all five were Pakistanis.