KHYBER AGENCY: Two Nato helicopters violated Pakistan’s border limits on Monday morning, entering through the Torkham border located in Khyber Agency, according to security officials.

The Nato helicopters entered from the Torkham border into Landi Kotal area of Khyber Agency bordering Afghanistan, said security officials.

Nato helicopters have also previously violated Pakistan’s border limits and targeted a security checkpost killing three officials.

Security officials are investigating the matter.