Pakistan on Saturday said it denied India’s Prime Minister Narendra Modi permission to fly through its airspace due to “ongoing grave human rights violations” in Indian-administered Kashmir.

The decision came with tensions simmering between the two nuclear-armed arch rivals over the disputed Himalayan region. It is the third time in recent weeks that Islamabad has refused to allow Indian leaders to use its airspace.

Requests by Indian President Ram Nath Kovind and Modi were turned down last month.