KARACHI (TIP): Imran Khan led Pakistan Tehreek-e- Insaaf (PTI) has called for a complete shutdown of the port city on December 12 as part of its countrywide protests against the Nawaz Sharif government. Senior PTI leader and Member of the National Assembly (MNA) Dr Arif Alvi, who hails from Karachi tweeted that the shutdown would start from 6.00am (local time). “It will be a complete shutdown as the Transporters and Traders associations are supporting our plan C to shutdown Karachi on December 12,” he said. The attempted shutdown of Karachi, for long the stronghold of the Mutthaida Qaumi Movement (MQM) which represents the urdu speaking migrants from India, is PTI’s first major show of strength.