A former chief of Assam Police, he retired as Director General, National Security Guards (NSG). He also served in the Intelligence Bureau for over quarter of a century, mostly in the North East and West Bengal. On deputation to MEA, he served at Indian Embassy, Washington DC. Post-retirement, he was vice-president, Public Health Foundation of India and an Independent Director on the board of Gas Authority of India Ltd (GAIL).
He is currently Special Monitor with National Human Rights Commission (NHRC) for Criminal Justice (Except Courts); Trustee of Mission Smile and Vision Spring; vice-president & member North-East, Centre for North-East and Eastern Region Studies, Kolkata (CENERS-K); and Distinguished Fellow, United Service Institution of India (USI).
