India shot down five Pakistani fighter jets and one other military aircraft during clashes in May, India's air force chief said on Saturday, in the first such public claim by the country after its worst military conflict in decades with its neighbour, Reuters reported.

Pakistan's Defence Minister Khawaja Muhammad Asif rejected the statement, saying India had not hit or destroyed a single Pakistani aircraft.

At an event in the southern Indian city of Bengaluru, Indian Air Chief Marshal A.P. Singh said most of the Pakistani aircraft were downed by India's Russian-made S-400 surface-to-air missile system. He cited electronic tracking data as confirmation of the strikes, according to Reuters.