NEW DELHI: Prime Minister Manmohan Singh said there is credible information that terrorist groups based in Pakistan are planning to carry out fresh attacks in India, and advocated the need for utmost vigilance.

"There is credible information of ongoing plans of terrorist groups in Pakistan to carry out fresh attacks," the Prime Minister said addressing the Conference of Chief Ministers here.

He said cross-border terrorism remains a "most pervasive" threat.

"After the Mumbai attacks, we have put in place additional measures. There is need for continued utmost vigilance," Singh said.