Former Prime Minister (PM), Atal Bihari Vajpayee was admitted to All India Institute of Medical Sciences (AIIMS) in New Delhi today. Though there is no confirmation as to the exact reason for his being shifted to AIIMS, it is learnt that Vajpayee has been ill for quiet some time now. The nature of the illness is however not clear. He is 92 years old and has been suffering from health related issues lately. But the exact reason for the sudden shifting to the hospital from his house is to be ascertained.