The de-miner was among the six people who had visited the TAPI project site for the survey work when they were ambushed, leaving five of them dead.
The local officials are saying that the dead body of the sixth de-miner who had gone missing after the attack has been found in Kandahar today.
According to the officials, the militants had left the dead body of the de-miner after executing him.
Provincial police chief Gen. Abdul Raziq, said the de-miners belonged to AMDC company and were killed while clearing the TAPI gas pipeline route in Malang Kariz area.
Gen. Raziq further added that one of the de-miners has been abducted by the militants following the attack.
No individual or group including the Taliban militants has so far claimed responsibility behind the incident.
Kandahar is among the relatively volatile provinces in southern Afghanistan where the Taliban insurgents are active in some of its remote districts and often carry out terrorist related activities.