'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,' he said.

The US envoy had made the same point in Mumbai Thursday when he described Pakistan-based LeT as a 'regional and global' threat for the US and India.

'It is extremely important that these six people be brought to justice and put behind bars and receive sentences commensurate with their crimes against India, US and the world,' he had said.

The Pakistani government filed two cases against Saeed on Thursday but none of them accuse him of any involvement in the 26/11 Mumbai terror strike.

Pakistan has appeared reluctant to act against Saeed despite six dossiers provided by India that contains damning evidence against Saeed and other perpetrators of the Mumbai carnage.

External Affairs Minister S.M. Krishna is expected to meet his Pakistani counterpart Shah Mehmood Qureshi on the sidelines of the UN General Assembly in New York later this month. Pakistan's action against the Mumbai terror suspects will top the agenda.

Pakistan has pitched for unconditional resumption of talks, but India has made it clear that meaningful dialogue will not be possible unless Islamabad takes action against the masterminds of the Mumbai mayhem.

During his recent visit to the US last week, Chidambaram pressed India's case with US Secretary of State Hillary Clinton and asked Washington to put pressure on Pakistan to conduct the trial of Mumbai terror attack conspirators, including Saeed.