'If that is not evidence to continue the investigation against Hafiz Saeed, what else is evidence?' Chidambaram had then queried.

The dossier also mentions how in December 2007 and January 2008 Saeed was at a place where the lone terrorist of the 26/11 attacks caught alive, Ajmal Kasab, and nine others were trained.

However, Pakistani authorities have claimed that the evidence provided by New Delhi against the JuD chief was not adequate for arresting or prosecuting him.

Even the US has been mounting pressure on Islamabad to act, and said in no uncertain terms that going after Saeed and dismantling the terror infrastructure in that region was extremely important for both the US and India.

'It is extremely important that these perpetrators be brought to justice and put behind bars, and receive sentences commensurate with their crimes against India, US and the world,' said US Ambassador to India Timothy J. Roemer.

Saeed has been charged under Pakistan's Anti-Terrorism Act for making anti-state speeches but the fresh charges slapped on him have nothing to do with the 26/11 strikes. They are for using loud-speakers and making hate speeches.

National Security Adviser M.K. Narayanan also questioned the credibility of the FIRs Pakistan had filed against Saeed.

In an interview to a television channel, he said the FIRs did not add any credibility to Pakistan's commitment to act.

'If you take the Saeed dossier that has been provided to Pakistan, I think we have marshalled what I would call grade-1 evidence. You have the evidence from three people, three human beings, three admitted terrorists - Kasab, Fahim Ansari, Soharabuddin - who talked of what Saeed had come [to] talk to them [about], what he had said.'