Pakistan Tehreek-e-Insaf (PTI) Chairman Imran Khan cut short his visit in the wake of over 850 deaths in Karachi caused by ongoing heatwave. Khan was on a private trip to London to spend time with his sons. He is likely to return Wednesday morning. The PTI chief has announced to visit Karachi upon his return. He would also visit hospitals to enquire about the health of heat-hit victims.