Disappointed at US refusal to extradite Headley: Khurshid

India today expressed disappointment over the US' refusal to extradite LeT terrorist David Headley even as it vowed to continue to pursue with its demand for bringing him here for his role in 26/11 Mumbai terror attacks.

External Affairs Minister Salman Khurshid also sent out a strong message to Pakistan saying there cannot be "any form of closure" to the Mumbai attacks unless all perpetrators, including LeT founder Hafiz Saeed, are brought to book.

He said India cannot "celebrate or be satisfied quickly" by some "hopeful" signs that emerged from Pakistan with regard to the case until people involved in the terror attacks on Mumbai are made accountable.

On Headley, he said India would continue with its demands though it understands that America has to adhere to its legal structure.

"Well it is disappointing, undoubtedly it is disappointing but we understand that they have a legal structure which has to be adhered to. We were anxious and we were wishing that the trial takes place here but it has taken place there (in US)," Khurshid said.

He was asked to comment on US Attorney Gary S Shapiro testifying before a court yesterday ruling out extradition of Headley under a guilty plea that the Pakistani-American had entered into with the US government