Ajmal Amir Kasab, the lone surviving 26/11 terrorist, claims his father sold him to Pakistan-based Lashker-e-Toiba for a few hundred thousand rupees as the family was "poor" and he felt that by joining the group, his son can have a "good life".

A tape of Kasab's interrogation, recorded moments after his capture, was part of an HBO documentary 'Terror in Mumbai' to be aired on the channel on November 19, ahead of the first anniversary of the horrific attacks that claimed 183 lives.

A preview of the film, which features exclusive audio tapes of the intercepted phone calls between the gunmen and their controllers in Pakistan, and testimony from Kasab, was aired on Sunday in the GPS programme of Fareed Zakaria, who is its narrator and snippets were reported in the US newspapers.

One of the tapes of Kasab's interrogation deals with how he joined the feared terror group. The 22-year-old said his father, a snack vendor, sold him to LeT.

"These people make loads of money, and so will you. You don't have to do anything difficult. We'll have money. We won't be poor anymore. Your brother and sister can get married. Look, son, look at these guys living the good life," Kasab said, according to a report in the New York Post.

Asked by the police how much he was paid, Kasab said, "They gave it to my dad...Maybe a few hundred thousand."

The interrogator asked, "Did you ever ask, 'Won't I feel pity for the people I'm killing?" Kasab said: "I did, but he said you have to do these things if you're going to be a big man and get rewarded in heaven."