Should have arrested him earlier.
The Illustrated weekly of India (1923-93) , had posted an article, titled “The Spymaster” in its December 23, 1984 edition, which stated:
"The first meeting between Indian IB operatives and Sheikh Mujib had taken place as early as 1963, and after RAW was set up in 1968, it anticipated virtually every major military and political development that took place in what was then East Pakistan during a meeting in India with Mrs. Gandhi, at which the master spy (Kao) was also present, Mujib’s successor, Zia-ur-Rahman is reported to have remarked: “This man (Kao) knows more about my country than I do.”
Almost a decade late in arresting this snake.