According to initial reports, the BSF convoy was attacked near Udhampur on the Jammu and Srinagar Highway.
Some other reports coming from the area furher suggested that the attack happened at Sanruli, some 10 km from from Udhampur.
The militants threw a grenade on the BSF convoy, injuring three jawans.
Former J&K chief minister Omar Abdullah also took to Twitter to confirm the development.
An attack on this stretch of the NH after a very long time. Worrying development because area was militant free. https://t.co/F74uhpOLYS
— Omar Abdullah (@abdullah_omar) August 5, 2015