 By 9 September , Jinnah had also developed pneumonia . Doctors urged him to return to Karachi , where he could receive better care , and with his agreement , he was flown there on 11 September . Dr. Ilahi Bux , his personal physician , believed that Jinnah 's change of mind was caused by foreknowledge of death . The plane landed at Karachi that afternoon , to be met by Jinnah 's limousine , and an ambulance into which Jinnah 's stretcher was placed . The ambulance broke down on the road into town , and the Governor @-@ General and those with him waited for another to arrive ; he could not be placed in the car as he could not sit up . They waited by the roadside in oppressive heat as trucks and buses passed by , unsuitable for transporting the dying man and with their occupants not knowing of Jinnah 's presence . After an hour , the replacement ambulance came , and transported Jinnah to Government House , arriving there over two hours after the landing . Jinnah died at 10 : 20 pm at his home in Karachi on 11 September 1948 at the age of 71 , just over a year after Pakistan 's creation . 
