New Delhi: Congress President Sonia Gandhi has written to Prime Minister Manmohan Singh over the suspension of IAS officer Durga Shakti Nagpal, saying the officer must not be "unfairly treated".PromotedListen to the latest songs, only on JioSaavn.comHere is the full letter:Also ReadParliament Winter Session Highlights: "Our Constitutional Amendments Not Done To Further Grip On Power," Says PMWho is Francois Bayrou, France's Fourth Prime Minister In 12 MonthsFrance's Macron Names Veteran Centrist Ally Bayrou As Prime Minister