The authorities in Pakistan's tribal region of North Waziristan say a soldier has been killed in an ambush on a military convoy by unidentified men.
Troops and militants have clashed repeatedly in the area
Several people were also wounded in the attack in Datakhel area, west of the regional capital, Miranshah, on Monday night, officials said.
No one has claimed responsibility for the attack.
More than 200 people were killed in clashes between troops and militants in North Waziristan last month.
The lawless tribal belt has seen fierce battles in recent years, but fighting has intensified over the past month.
Eyewitnesses said the military convoy, comprising three vehicles, was heading for the mountainous region of Shawal when it came under attack.
Local pro-Taleban militants have claimed responsibility for such attacks in the past.
A security force picket also came under attack, but there were no casualties.
Seven soldiers died a similar ambush in the Razmak area last week.
Pakistani forces entered the tribal belt a few years ago to hunt down Taleban and al-Qaeda fugitives who fled the US-led war in Afghanistan.
Washington sees the border zone as a front line in what it calls its war on terrorism.
But local tribesmen and Islamists have increasingly been drawn into the fight.