Pakistan claimed that India has fired missiles at three air bases in the country. But most of the missiles were intercepted and that retaliatory strikes on India were underway, it said as reported by news agency AP.

Heavy shelling was reported from the Pakistani side along Jammu and Kashmir's Akhnoor, Hamirpur and Pallanwala.

Two huge blasts and sirens were heard in Jammu city in Indian Kashmir on Thursday and there was a blackout across the city, a Reuters witness said.