Voicing India's disappointment over Pakistan not prosecuting perpetrators of the Mumbai attacks, Home Minister P Chidambaram today made it known to Secretary of State Hillary Clinton that it expects tangible action on the terror issue.

Wrapping up his four-day visit, Chidambaram who met Hillary and other top officials, said he had told them about Hafeez Sayeed, the founder of Lashkar-e-Taiba and mastermind of the 26/11 attacks, roaming free despite evidence provided by India which has handed over six dossiers.

"I think, the US understands the difference between the way India's approach to post 26-11 situation and the way Pakistan approached post-26/11 situation. It is enough to draw attention to the difference and leave it there," he said when asked if the US is exerting enough pressure on Pakistan to take action against terrorists targeting India from its soil.

The home minister said he had not asked specifically to"push for this and to push for that" during his interaction with the Indian media here to a question if he had sought US assistance to ensure that Pakistan takes action against perpetrators of the Mumbai attacks.

"I did brief them on the state of the trial of Ajmal Kasab (the lone surviving Mumbai attack terrorist) in India and I also did mention about no progress in Pakistan in respect of the five or six people they have arrested. And Hafeez Sayeed (LeT founder) remains a free man. I think that is enough. They know to draw the lessons from that statement," he said.