"Pakistan is a terrorist state and it should be identified and isolated as such. I am deeply disappointed with Pakistan’s continued and direct support to terrorism and terrorist groups," Singh wrote in his Twitter account.
Four terrorists reportedly attacked the Army Brigade's headquarters in Kashmir's Uri at 5:30 a.m. local time (00:00 GMT). No group has yet claimed responsibility for the attack so far.
The region of Kashmir has been disputed by India and Pakistan since the dissolution of British India and the establishment of the two states in 1947. Some local residents, most of them Muslims, especially those residing in the Kashmir Valley, call for greater autonomy or even independence from India.