Terming cross-border terrorism a "most pervasive threat", Prime Minister Manmohan Singh on Monday said that there was "credible information" that terrorist groups in Pakistan were planning to carry out fresh attacks on India.

"There is credible information of ongoing plans of terrorist groups in Pakistan to carry out fresh attacks," Singh told a gathering of Chief Ministers from across the country attending a Conference on Internal Security on Monday.

"The area of operation of these terrorists today extends far beyond the confines of Jammu & Kashmir and covers all parts of our country," he said adding that though additional measures had been put in place after the 26/11 Mumbai attacks, there was "need for continued vigilance". "The challenges posed by asymmetric warfare and terrorism as also the Left Wing Extremism can only be met through new ideas and more resolute actions and determination. We need to be ahead of the curve if we are to succeed as we must," Singh said.

The security agencies needed to be prepared for encountering more sophisticated technologies and enhanced capabilities in dealing with the terrorist challenge, the PM said. "We also need to guard our sea frontier as vigilantly as our land border," he said.

"We are all aware that most issues pertaining to internal security require a coordinated response by the Centre and the States acting in concert. The importance of this can not be over-emphasized. A piece meal approach will simply not work given the nature of challenges we face. Not only do we need more information sharing, we also need synchronized action. Let me assure all the States that the Centre will not be found wanting in this regard," the PM told the gathering.

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