The terrorists have been identified as Raqib Ahmad Sheikh, a resident of Shiganpora in Kulgam, and Pakistani nationals Waleed and Numan, a police spokesman said.
The college student, a goalkeeper for his local team in Anantnag in south Kashmir, is believed to have turned to militancy after a close friend was killed in an encounter.
Border skirmishes witnessed a spurt after India's preemptive air strike.
Khan said Pakistan wants peace with India but will retaliate in case of any "aggression" by the neighbouring country.
"The Prime Minister thanked the Prime Minister of Pakistan for his telephone call and greetings," MEA said.
Poonch district of Jammu region recorded the highest turnout at 75.42 per cent. Ganderbal district recorded the highest polling in Kashmir valley at 56.28 per cent.