Bhopal (Madhya Pradesh) [India], December 16 (ANI): Indian Administrative Service (IAS) officer Raghvendra Kumar Singh has been appointed principal secretary to Chief Minister of Madhya Pradesh Mohan Yadav. According to an order issued on Friday evening, Singh, an IAS officer from the 1997 batch, has also been given the additional charge as principal secretary of the state government and Public Service Management Department. Singh would replace Manish Rastogi, an IAS officer from the 1994 batch who held the previous charge and has now been appointed as principal secretary to the state governme…