As is always the case, several parallel forensic examinations are underway. Central security agencies, the National Security Guard, Haryana police and now even the Delhi police have collected material from the blast site.

There was some hope of a breakthrough after the detention of a Pakistani national, who had allegedly thrown one of the suitcases out of the train, but he let off by this afternoon as the police could not find anything against him. Moreover, the Pakistan High Commission had indicated its intention to seek consular access to him.

The Samjhauta explosion has also added a new dimesnion to India’s terror alert system. From now on, blasts and attacks in Pakistan will be watched carefully as they could resonate here as well, emphasising that both countries are a common target.

The first step in this direction was taken today when the Home Ministry, taking note of the suicide attack in a courtroom at Quetta, Pakistan, yesterday called for a review of security of courts here, this includes the Supreme Court and other high courts.

Meanwhile, Pakistan Foreign Minister Khurshid Mahmud Kasuri reached here today and visted the injured in Safdarjung Hospital. Kasuri, who will meet Prime Minister Manmohan Singh and his counterpart Pranab Mukherjee tomorrow, emphasised the need to not blame Pakistan for terrorism.

It’s learnt that the Pakistan delegation will bring up proposals for improved security on trains like the Samjhauta and theThar Express. New Delhi, on other other hand, feels security of trains in India is not a bilateral issue although it’s ready to offer whatever assurances are needed.