Islamabad: The US and UK have provided Pakistan evidence of the involvement of elements from that country in the Mumbai terror attacks but western diplomats believe Islamabad has “not done enough" in terms of acting on the intelligence.

In the wake of the attacks, British and American investigators amassed a large amount of technical and human intelligence that was passed on to Pakistan, some western diplomats said.

Sleuths from the Federal Bureau of Investigation (FBI), who were allowed access to Mohammed Ajmal Kasab, the lone gunman captured during the attacks, were convinced he is a Pakistani national and that the terrorist strike was planned and coordinated by elements in Pakistan.

Blame game: A 26 November photo of Kasab. Sleuths from FBI said they were convinced that Ajmal is a Pakistani national. Sebastian D’souza / AP

“The Pakistani authorities have not done enough on the intelligence shared with them," said a diplomat.

The diplomats said the most clinching evidence on the involvement of Pakistani elements was provided by the British authorities.

In fact, British intelligence operatives were so convinced of the Pakistani links to the attack that they did not take up an offer to question Kasab.

Meanwhile, leading Pakistani newspapers on Sunday warned that Pakistan risks a rise in terrorist activity if it lets tensions with India divert its attention and troops away from the fight against Taliban and Al Qaeda militants along its northwest border with Afghanistan.

Pakistan “just cannot afford to redeploy any large number of its troops on the eastern border, leaving the ‘wild’ West in a free fall," ‘Dawn’ newspaper wrote in an editorial.

‘The Daily Times’, another English newspaper, urged Pakistan to avoid that trap. “Moving partially or fully out of the tribal areas will leave the fight against the terrorists unfinished," it wrote.

‘Daily Jang’, an Urdu newspaper, put the onus on the US to try to defuse tensions. “In this situation, if Pakistan moves even a small number of troops from tribal areas to eastern border, it will certainly have negative effect on war on terror," the paper wrote.

Nahal Toosi of AP contributed to this story.