<p>Several cities and towns in Pakistan plunged into darkness after a huge blackout, according to media reports.</p>.<p>The outage was reported shortly before midnight on Sunday almost simultaneously in many cities, the <em>Dawn </em>reported.</p>.<p>Residents of Karachi, Rawalpindi, Lahore, Islamabad, Multan, and others faced the blackout, the reports stated.</p>.<p>Islamabad Deputy Commissioner Hamza Shafqaat tweeted that the National Transmission Despatch Company’s (NTDC) lines have tripped, causing outage."It will take sometime before everything gets back to normal," he added.</p>.<p>The NTDC teams are working to ascertain reasons behind the sudden fall in frequency of the national distribution system, the Express Tribune quoted a Power Division spokesperson as saying.</p>.<p>Power Minister Omar Ayub tweeted the "frequency in the power distribution system suddenly dropped from 50 to 0 which caused the blackout".</p>.<p>"We are trying to ascertain what caused the drop in frequency, Ayub said, appealing to people to maintain restraint.</p>
<p>Several cities and towns in Pakistan plunged into darkness after a huge blackout, according to media reports.</p>.<p>The outage was reported shortly before midnight on Sunday almost simultaneously in many cities, the <em>Dawn </em>reported.</p>.<p>Residents of Karachi, Rawalpindi, Lahore, Islamabad, Multan, and others faced the blackout, the reports stated.</p>.<p>Islamabad Deputy Commissioner Hamza Shafqaat tweeted that the National Transmission Despatch Company’s (NTDC) lines have tripped, causing outage."It will take sometime before everything gets back to normal," he added.</p>.<p>The NTDC teams are working to ascertain reasons behind the sudden fall in frequency of the national distribution system, the Express Tribune quoted a Power Division spokesperson as saying.</p>.<p>Power Minister Omar Ayub tweeted the "frequency in the power distribution system suddenly dropped from 50 to 0 which caused the blackout".</p>.<p>"We are trying to ascertain what caused the drop in frequency, Ayub said, appealing to people to maintain restraint.</p>