Pakistan Army's media wing Inter-Services Public Relations (ISPR) said the incident took place in the province's South Waziristan district on Tuesday when terrorists exchanged fire with troops, Xinhua news agency reported.

The statement said an elimination operation was being conducted to eliminate any terrorists found in the area.

This was the second attack on security forces in the province on Tuesday. In an earlier attack, an army officer was killed in a clash with terrorists in the neighboring North Waziristan district.

Investigation is going on. More information is awaited.