The Border Security Force and the Pakistani Rangers exchanged small arms fire intermittently for nearly half-an-hour along the International Border in Ramgarh sector of Samba district as the former foiled an infiltration bid from across the International Border on Tuesday morning. Giving details,Deputy Inspector General of BSF,J S Oberoi,said that BSF personnel at Ballad post noticed a person moving from across the border towards the Indian side around 5 AM.