Stressing the need for continued cooperation between India and Pakistan in bringing the perpetrators of Mumbai terror strikes to justice, the United States has said both the neighbours should ensure that such attacks are not repeated.

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Secretary of State Condoleezza Rice [Images] said the United States will continue to cooperate with both India and Pakistan in 'every regard'.

"The key is that the parties need to focus on -- and I think, we are focusing on -- both bringing the perpetrators to justice and prevention of any following on attacks," the top US diplomat told media persons after a meeting of the Middle East Quartet at the UN headquarters on Monday.

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Rice, who visited both New Delhi [Images] and Islamabad [Images] in the aftermath of the November 26 attacks on Mumbai, said the US has made its views very clear on the issue and both parties are continuing to cooperate in this regard.

However, she parried a question posed by a Pakistani journalist about 'increasing tensions' between the two countries following reported incursion of the Indian fighter planes into Pakistani air space.

India has denied that its warplane made any incursion into the Pakistan airspace. Later, Pakistan President Asif Ali Zardari [Images] described it as 'technical incursion'.

"Incursions do happen," he said, adding that the planes were flying at about 40,000 feet to 50,000 feet when they executed a turn that 'slightly entered Pakistan soil'.