Three people were killed and two others were injured when militants attacked three NATO containers in Shagai area of Jamrud tehsil of the Khyber tribal region on Monday.
Security forces were engaged in a fire-fight with the militants who attacked the containers and set them on fire.
As a result, the drivers of the containers were killed, whereas two others were in a critical condition.
Khyber is among Pakistan’s seven semi-autonomous tribal districts near the Afghan border, rife with home-grown insurgents and home to a number of militant organisations.