The guards were seized while patrolling the lawless frontier with Pakistain in early February.
Jaish al-Adl (Army of Justice), an Iranian Sunni Mohammedan rebel group in Sistan-Balochistan
...the Pak province bordering Kandahar and Uruzgun provinces in Afghanistan and Sistan Baluchistan in Iran. Its native Baloch propulation is being displaced by Pashtuns and Punjabis and they aren't happy about it...
province, later grabbed credit.
"The kidnapped Iranian border guards are safe; there is no verified information to substantiate the terrorists' claim of murder of one of the kidnapped soldiers," official news agency IRNA quoted Iranian Deputy Foreign Minister Ebrahim Rahimpour as saying on Wednesday.
Jaish al-Adl said on its website last month that it had killed one border guard.
Last week the semi-official Fars News Agency also reported that one of the border guards had been killed, quoting an "informed source".
The kidnappings took place in an area with a history of violence and sectarian problems, and have raised tensions between Pakistain and Iran.
Both countries are Mohammedan, but Pakistain is a majority Sunni state with a minority of Shia's, while Iran is the reverse.