QUETTA-Two persons sustained injuries when unidentified armed men attacked a container carrying goods for NATO troops in Afghanistan in Mastung district some 45 kilometers away from Quetta. The official sources said, a container was on its way to Afghanistan from Karachi when it reached near Mastung unidentified persons opened indiscriminate firing on it. As a result, two persons sustained injuries in the attack. The injured were shifted to nearby hospital for treatment. Meanwhile, thousands litres of oil was also wasted when unidentified persons opened fire on an oil tanker carrying fuel for NATO troops to Afghanistan.