The men were abducted last month from the Orakzai region after militants attacked a military post.

BBC: Abducted Pakistan paramilitary troops found shot dead

Members of the Zakhakhel tribe had been travelling from Tirah valley in Khyber district to Peshawar when they were caught in the blasts in Orakzai.

BBC: Attacks in Pakistan's north-west 'kill at least 19'

An Orakzai administration official told the BBC there had been two bombs and that two passenger vans had been targeted near the village of Hasanzai.

BBC: Attacks in Pakistan's north-west 'kill at least 19'

Misri Khan Orakzai, 48, was correspondent in Hangdu for several newspapers, including Jinnah in Islamabad and Mashriq in Peshawar, and president of the Hangdu Union of Journalists.

UNESCO: MEDIA SERVICES

It largely controls Bajaur, Khyber, Kurran, Mohmond and Orakzai agencies.

CENTERFORSECURITYPOLICY: Pakistani nightmare