New Delhi, Nov. 18 -- A purported video of Dr Umar Un Nabi, the driver of the car the Delhi bomb blast case that killed 12, has surfaced online, with the video showing the doctor speaking about a "misunderstood" idea of suicide bombings.

"One of the very misunderstood concepts is concept of what has been labelled as suicide bombing. It is a martyrdom operation...," Nabi is heard saying in the chilling video, which shows him alone in a room.

"There are multiple arguments and contradictions that have been brought against it. Martyrdom operation is when a person presumes that he is going for sure die at a particular place, at a particular time," he adds.

The video, which is believed to have been taken before the November 10 attack, comes ...