India said its fighter jets destroyed a major terrorist camp in Pakistan in an incident described by Islamabad to be a "grave aggression," and reported to have been the worst escalation between the nuclear-armed rivals since 2001.

More than 300 people were killed in the airstrikes at the camp belonging to terrorist group Jaish-e-Mohammed that has trained suicide bombers, according to an Indian official speaking on condition of anonymity. Pakistan denies the attack did any damage or caused casualties.

Foreign Secretary Vijay Gokhale said in New Delhi today that India carried out strikes in Pakistan following an attack in Kashmir earlier this month, and in response to intelligence that indicated Jaish-e-Mohammed was planning more attacks.