Officials at the joint anti-terror meeting, which ended today, are said to have handed over this photograph along with the two sketches and asked for help in locating him and allowing access to him for questioning. The relevance of the sketches to the investigation, however, is still in doubt with Railway records contradicting eyewitness statements on which the sketches are based. RPF officials have claimed that the train didn't slow down at all. This conflicts with the police theory based on a passenger’s account that he had seen two persons jump off the train after an argument with the ticket examiner shortly before the blasts.

The last time a Pakistani national was accused of having a hand in a terror act in India was when the Karnataka police arrested Mohammad Fahad, a suspected Al-Badr terrorist, from Mysore in October last year. After India's claim that he was a Pakistani national, Pakistan sought consular access to the accused. The request is still pending, official sources said.

On Tuesday, the Indian team at the joint anti-terrorism mechanism meet also handed over the photograph of an unclaimed body from the site of the Mumbai train blasts, asking for Islamabad’s help in identifying him. Investigators suspect that this person could have been involved in the blasts.

At the end of the talks today, India and Pakistan agreed to exchange information that will help investigate acts of terrorism and prevent violence and terrorism in the two countries.

The mechanism was set up after a Havana meeting between PM Manmohan Singh and President Musharraf in September last year. The Indian delegation was led by Additional Secretary in the ministry of external affairs K C Singh while the Pakistani team was headed by Tariq Osman Hyder, additional secretary in the ministry of foreign affairs.

The two sides will meet every quarter but information that needs to be conveyed in the interim can be routed through the respective heads of the two sides.