Peshawar- At least two people were injured today when unknown militants attacked a NATO supply convoy on the Pak-Afghan Highway in Jamrud Tehsil of Khyber Agency. Some nearby vehicles also sustained minor damage. Line officer Amjad Khan said that the convoy of trucks was targeted near the Sur Qamar area about 10 kilometres from the Bab-i-Khyber on the main Peshawar-Jalalabad Highway. Officials reported that the militants fired two rockets on the trucks and used heavy machine guns and rifles to target the supply convoy.  Security forces and militants also exchanged fire for half an hour which led the militants to flee. A heavy contingent of Frontier Corps and Khasadar Force also reached the spot and cordoned off the area as a search operation went underway.