LANDI KOTAL, Sept 15: Security forces killed four militants after their attack on the forces convoy with a remote-controlled explosive device left two soldiers dead in Bara tehsil of Khyber Agency on Thursday, officials said.

The incident occurred in Gandao area when an improvised explosive device planted on a roadside went off when a security convoy was passing by. Two security personnel were killed and one was injured in the explosion.

Later, the forces cordoned off the area and started indiscriminate firing. The officials said that at least four militants were killed and six others injured in the retaliatory fire by the security forces. A search operation was also conducted, but no one was arrested.

In Landi Kotal, the security forces defused an explosive device planted on a roadside near Charwazgai security checkpost.

In another incident, the militants destroyed a government school and private clinic in Speen Qabar area of Bara late on Wednesday night while a militant was killed in bomb explosion, officials said.

They said that an unidentified militant was killed when explosive material he was trying to plant inside a school in Speen Qabar exploded. They said that other militants later destroyed the school.

An adjoining private health clinic was also damaged due to the explosion. The same school was also targeted by militants a few weeks ago, causing partial damage to its building.

Meanwhile, at least three houses were partially damaged when mortar shells fired by the security forces at the suspectedmilitant positions hit the houses of Azmat Shah and Maulana Abdul Qayyum in Gandao area on Thursday.