ISLAMABAD - Pakistan on Monday said that it was exceedingly difficult to complete the investigation in to the Mumbai attacks case and proceed with it without substantial evidence from India. The Defence Committee of Cabinet met at the Prime Minister House here with Prime Minister Syed Yousuf Raza Gilani in the chair. The meeting acknowledged that inquiry had been conducted professionally and endorsed the recommendations of the Interior Ministry to proceed with the registration of the case. In order to complete the investigation the questions, which were arising from the inquiry carried out by the FIA, needed to be answered by the Indian authorities. These would shortly be communicated to the Indian authorities. The Defence Committee of the Cabinet also reviewed the security situation in the country with special reference to the volatile situation in Swat and tribal areas. On the occasion, the Prime Minister said that on the basis of the inquiry conducted by FIA into Mumbai terror attacks, the case should be registered and further investigation be carried out so that the perpetrators of the heinous crime, wherever they may be, would be brought to justice in accordance with the law of the land. The meeting was attended by the Minister for Defence, Ch Ahmad Mukhtar, Minister for Defence Production, Mr Abdul Qayyum Khan Jatoi, Minister for Foreign Affairs, Makhdoom Shah Mehmood Qureshi, Minister for Information and Broadcasting, Sherry Rehman, Minister for Law, Farooq H Naek, Advisor to PM on Finance, Shaukat A. Tarin, Advisor to PM on Interior, Rehman Malik, Chairman Joint Chiefs of Staff Committee, General Tariq Majid, Chief of Army Staff, General Ashfaq Parvez Kayani, Chief of Naval Staff, Admiral Noman Bashir, Chief of Air Staff, Air Chief Marshal Tanvir Mehmood Ahmad, DG ISI, Secretary Cabinet, Secretary Foreign Affairs, Secretary Defence, Secretary Interior and DG IB. The DCC meeting was briefed about the progress on the inquiry based on information provided by the Indian authorities concerning the Mumbai attacks. The meeting decided that on the basis of inquiry conducted by FIA, the case should be registered and further investigation be carried out so that the perpetrators of the heinous crime, wherever they may be, are brought to justice in accordance with the law of the land. Meanwhile, A statement was issued after the meeting said that the lack of evidence may create problems in the investigation. It also said that the Federal Investigation Agency had conducted the probe professionally and transparently. Besides, the committee discussed law and order situation in Swat and tribal areas also. The November assault on India's financial capital, when 10 gunmen killed 165 people during a 60-hour siege, has led to a furious blame game that has sharply escalated tensions between the nuclear-armed neighbours. New Delhi blamed the attacks on the banned group Lashkar-e-Taiba, but the Pakistan-based organisation has denied responsibility. In January, India handed Gilani's government what it said was evidence linking "elements" in Pakistan to the November atrocity, but Pakistan has insisted that India provided only some information and no evidence. Monday's statement said that a case would be registered domestically on the recommendation of the interior ministry - but did not specify against who or how many people or on what charges. "The case should be registered and further investigation be carried out so that the perpetrators, wherever they may be, of the heinous crime are brought to justice in accordance with the law of the land," it said. Gilani has said that anyone found guilty in Pakistan in connection with the Mumbai attacks would be punished under Pakistani law. India last Thursday for the first time directly accused Pakistan's intelligence agency of involvement in the Mumbai attacks. Pakistan slammed those allegations as "yet another manifestation of undisguised hostility" that was "part of a global smear campaign" and "inconsistent with the established norms of diplomatic parlance". A four-year peace process to resolve the Indo-Pakistani dispute over Kashmir, was put on hold after the Mumbai attacks.