India accused Pakistan of using U.S.-made F-16 fighter jets in its raid in Kashmir, opening up a potential diplomatic row over the aircraft's deployment by one American ally against another.

India said it scrambled MiG-21 Bison, Su-30 MKI and Mirage-2000 aircraft to intercept Pakistan's jets and has evidence, including the wreckage of an AIM-120 advanced medium-range air-to-air missile fired by a Pakistani F-16.

The Indian Air Force also tracked the so-called digital signatures of the aircraft, one of which was downed by India and fell in Pakistan-administered Kashmir, Air Vice Marshal R.G.K. Kapoor said in New Delhi on Thursday. Islamabad has denied it used F-16s in the raid or that it had lost one.