Special Assistant to the Prime Minister for Political Communication Shahbaz Gill says investigation into the interruption in power supply is underway to ascertain reasons and to avoid such incidents in future.

Talking to a private news channel, he said the Minister of Energy Omar Ayub Khan himself has been analyzing and monitoring the matter of interruption of electricity supply.         

The SAPM said transmission lines were not up-graded in previous regimes and it was the main cause of power breakdown across the country.