Govt to refer four new cases against Sharif family to NAB

* PM's aide says cases include misuse of funds in erecting a security fence around Raiwind Palace, plundering funds allocated for entertainment and gifts and unauthorized use of prime minister's aircraft by Shehbaz Sharif and Maryam Nawaz
* Case about Sharif's family's new property unearthed in London also being sent to NAB for probe