The National Investigation Agency on Thursday attached the properties of two key Lashkar-e-Taiba (LeT) operatives for their involvement in the 2015 terror attack on a BSF convoy in Udhampur district of Jammu and Kashmir. Two BSF personnel were killed and 13 others injured in the attack, which took place on August 5, 2015 on the Srinagar-Jammu national highway in Narsoo village of Udhampur district. One terrorist was killed and another, identified as Naveed, was arrested in the retaliatory action by the security forces.