(CNN) -- Armed militants torched two tankers carrying fuel for NATO troops through southwest Pakistan's volatile Balochistan province, police said.
While no one was injured in this attack, two other attacks nearby left four dead.
In the Khuzdar district of Balochistan, militants shot at the tankers transporting fuel to U.S. and allied troops in an attempt to stop them, police official Mir Hassan told CNN.
"The drivers narrowly escaped the attack and managed to flee from the tankers," Hassan said.
The oil tankers had left from Karachi, the Arabian Sea city that is Pakistan's most populated, and was heading toward Afghanistan when it came under attack.
Meanwhile, two police officers and two civilians died in separate attacks elsewhere in Balochistan.
The civilians were killed when militants fired on their vehicle, said police official Muhammed Tariq.
Gunmen also killed a police officer in the same area, and a police constable died in an armed attack in another town.
There's been no immediate claim responsibility for any of the attacks.