India, Nov. 18 -- Investigators probing the blast near Delhi's Red Fort have found a purported video of Dr Umar Un Nabi, who was behind the wheel of the car that exploded on November 10, in which he is heard calling a suicide bombing martyrdom operation.

The video, believed to have been recorded before November 10, shows Nabi alone in a room talking about the concept of suicide bombing. He is purportedly heard saying that the commonly referred term suicide bombing is not understood correctly and that there are many contradictions and objections raised on the term.

"One of the very misunderstood concept is what has been labelled as concept of suicide bombing. It is a martyrdom operation. There are multiple arguments and contradictions th...