Tribal militants have shot dead three members of the Pakistani security forces in the troubled province of Balochistan, officials say.
Tribesman say they are fighting for greater economic rights
The officials said the soldiers were on their way to fetch water when their jeep came under attack, in a mountainous area in Kohlu district.
Baloch nationalists have been fighting for more autonomy for decades.
They want more control over the economy, particularly Balochistan's rich gas reserves.
In August, Pakistani security forces killed one of the most important tribal leaders in the area, Nawab Akbar Bugti, which led to widespread protests.