He said that a charge sheet would also be filed against the terror mastermind soon.
Slamming opposition the he said that he could not comment on the communication that happened between US officials over the Headley issue.
"Ask these questions to the Americans, not to me. How can I comment on the communication between US officials? There is no question about the fact that we were serious about Headley's extradition," said Narayanan.
The opposition on Sep 4 (today) targeted the UPA government after Wikileaks reported that India wanted to extradite Headley only to appease the public but was never serious about it.
"The trend in the cables is that the Indian government succumbed to pressures from the USA government on foreign policy matters... And accepting the American direction of American pressure... This is what emerges broadly," said CPI (M) General Secretary Karat slamming the government.
"Wikileaks is not credible hence I would not like to comment on it, the government will give the explanation. It talks about the communication between American officials," said, Congress leader, Rashid Alvi refusing to comment over the issue.
The Wikileaks had revealed that India was not serious about extraditing David Coleman Headley, main accused in the Mumbai terror attacks.