The troops launched a fresh operation using heavy artillery and gunships to clear pro-Taliban militants on the main highway to Kabul through the historic Khyber pass, used by NATO forces to ferry supplies.
Eight people including militant were killed on Tuesday.
Pakistani tanks and helicopter gunships swung into action pre-dawn to flush out the Taliban militants.
As a new assault, Pakistani authorities closed down the highway till all the Taliban groups are cleared from the area.
Taliban and Pushtun tribesman carried out a number of spectacular raids torching hundreds of special vehicles used to ferry supplies to NATO and US forces in Afghanistan.
The estimate is about 70 per cent of fuel, ration and other supplies are ferried to forces in Afghanistan through the Khyber highway which links up Peshawar to Kabul via Jalalabad.
Eight persons, including two militants, two children and two women, were killed in shelling in Jamrud sub-district of Khyber Agency.