Pakistan-Afghanistan border crossings at Torkham and Chaman have been closed for all sorts of traffic.
The border points have been closed to stop entry of terrorists from Afghanistan.
Several banned terrorist organizations, including Tehrik-e-Taliban Pakistan and Jamaat-ul-Ahrar are based in Afghanistan, and they have been carrying subversive activities in Pakistan from there.
Security forces have increased patrolling, surveillance and checking on check posts along the Pak-Afghan border.
Meanwhile, several terrorists were killed in an exchange of firing with security forces in Khyber Agency on Friday.
According to Inter-Services Public Relations (ISPR), the terrorists attacked Pakistani border post in the agency from the Afghan side.
Two FC soldiers were also martyred in the attack.