Original: Prior to 2001, there were 106 districts but with the reorganisation, these were reduced to 102 by the merger of the five districts of Karachi Central, Karachi East, Karachi South, Karachi West and Malir to form Karachi District.
Simplified: Five districts of Karachi, Central, Karachi East, Karachi South, Karachi West and Malir were joined to form Karachi District.