Union Home Minister Rajnath Singh on Friday expressed deep anguish over the death of three BSF personnel in an ambush in Jammu and Kashmir."He (Singh) has also prayed for the recovery of the injured," a tweet from the Home Ministry's official Twitter handle 'HMO India' said.The minister also spoke to Border Security Force (BSF) Director General K.K. Sharma in the wake of attack on a BSF convoy in Bijbehara area.The minister instructed the DG to rush to the spot to review the situation, the official tweet said.Three BSF troopers were killed and 10 others, including three civilians, were injured on Friday in an attack by Hizb-ul-Mujhadeen on a security forces convoy in south Kashmir's Bijbehara town.