New Delhi, Aug 7 - The government has information of 'an ongoing ploy of terrorist groups in Pakistan' preparing to strike India again, Prime Minister Manmohan Singh said Monday while stressing that cross border terrorism continued to be a major threat.

'Cross border terrorism remains a major threat. After the Mumbai terror attacks in November last year we need to take utmost vigilance. We have credible information of an ongoing ploy of terrorist groups in Pakistan to carry out fresh attacks,' the prime minister said while addressing a meeting on internal security attended by chief ministers.

'The area of operation of these terrorists today extends far beyond the confines of Jammu and Kashmir and other parts (of India). We need to be prepared to counter more sophisticated and enhanced capabilities. We also need to guard our sea frontiers as vigilantly as our land.