Pakistan Tehreek e Insaf (PTI) has written a letter to Chairman National Accountability Bureau (NAB) for initiating an investigation into irregularities in the closure of Pakistan Steel Mill .

According to media reports, Pakistan Tehreek e Insaf leader Asad Umar has written a letter to Chairman NAB Justice Javed Iqbal for launching an investigation into irregularities behind the closure of Pakistan Steel Mill .

PTI has expressed concern over closure of country’s biggest industrial unit due to non-availability of gas and demanded that NAB should initiate the inquiry into the matter as soon as possible.