ISLAMABAD (Agencies): The National Assemblys defence committee on Friday demanded extra measures for the security of Pakistans nuclear assets. The committee, which met in-camera over the attack on the Mehran base, expressed its reservations over the insecurity of the countrys defence installations, stating that the attack on the naval base reflected the failure of the intelligence agencies, sources said. The sources said the NA Standing Committee on Defence, which meet held under the chairmanship of Abdul Ghani Talpur, demanded the government augment security of countrys nuclear arsenal and installations, as it observed that terrorists, who can launch attack on GHQ in Rawalpindi and PNS Mehran base in Karachi, could also strike on nuclear installations. Defence Secretary Athar Ali Khan tried to allay the fears of the committee members saying that the countrys nukes were in safe hands and there was not even a remote chance of their falling into the hands of terrorists. We will not hire services of foreign countries for safety of our nukes, the sources quoted him as telling the members. The defence secretary said the government has decided to change countrys security policy keeping in view the current situation. He said that work to change the security policy has already been started, assuring the committee that the new policy would be akin to unanimous resolution adopted by joint sitting of the parliament as well as decision taken by Cabinet Committee on Defence. The committee sought detailed report on the US unilateral strike in Abbottabad as well as attack on PNS Mehran base in Karachi. The defence secretary said the attack on the base could also have entailed insider involvement which was why a thorough investigation was being conducted. He said the security personnel, who were on duty at the base at time of attack, were also being investigated. Nearby houses and seminaries were also being searched because there were some information that the terrorists were living in nearby areas where they chalked out the attack plan, he added. Earlier, the committee members refused to take a briefing from the secretary defence on matters relating to Defence Housing Authority, adopting a stance that the country is facing serious threats and the briefing on DHA could be taken later.