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The Iranian border authorities handed over the 161 Pakistanis to Pakistan border forces at Taftan border .
The illegal residents were arrested from different parts of the country for having no residence permits and valid travelling documents.
The arrested persons were handed over to the Federal Investigation Agency for legal trial.
The detainees would be produced in the magistrate court and FIA will further interrogate the matter.
It is claimed that most of the detainees had served in Iranian jails as per law.
Iranian authorities also deported 133 Pakistani national due to illegal travelling documents.