India, Nov. 10 -- As India marks a year since the suicide bombing near Delhi's Red Fort, investigators have pieced together how a Kashmiri doctor and his accomplices planned the deadly attack after failing to leave for Afghanistan to support pan-Islamic causes.

Investigators believe that the prime accused, Dr Umar un Nabi, who drove an explosive-laden vehicle that blew up in the crowded Red Fort-Chandni Chowk area on November 10 last year, and his associates wanted to move to Sharia-governed Afghanistan, driven by a sense of Muslim victimhood.

Officials privy to the probe also believe that Nabi, an assistant professor at Haryana's Al Falah University, and fellow doctors Muzamil Shakeel and Adeel Ahmad Rather, all self-radicalised, had l...