[2] He served from 1964 to 1968 in the West Bengal cadre of the Indian Police Service and, in 1968, was deputed to the Intelligence Bureau, where he spent the rest of his career.

[5] Additionally, he was involved in handling sensitive operations related to counterintelligence and counterterrorism.

From 1983 to 1987, he was stationed in Canada, a time marked by the increasing rise of the Khalistan movement and the Kanishka bombing.

[6] After reaching retirement age, he pursued a career as an independent writer and journalist, contributing articles to all the prominent English newspapers, specifically focusing on India's intelligence system.

[7] Dhar passed away on May 19, 2012, following a month-long struggle with deteriorating health.