Here are two articles on this topic:
Also read the following op-ed by Asadullah Ghalib:
The Nahid Khan Virus and the Bhutto atom: The fate of Miss Nahid Khan will be no different from that of Farooq Leghari, Ghulam Mustafa Jatoi, and others who were used by agencies to destroy PPP. PPP is the name of Bhuttos and now Zardaris. This is a reality, admit it or not.