RAWALPINDI, March 28: The former director-general, Pakistan Telecommunication Authority (PTA), Imran Ahmed Zubairi was arrested by FIA when he landed at the Benazir Bhutto International Airport on Monday after Dubai authorities deported him.Immigration officials said Mr Zubairi, who was arrested in Dubai by Interpol, had been handed over NAB (National Accountability Bureau) authorities for investigation.Mr Zubairi is wanted by NAB for his alleged involvement in mis-appropriation of funds.—Staff Reporter