Afghan authorities say U.S-led coalition forces have arrested five suspected Taleban insurgents in connection with an attack on a oil tanker that killed two Pakistanis.

Police in the Afghan border town of Spin Boldak said the five suspects were apprehended Wednesday - a day after the two Pakistani nationals were killed in the same area.

The victims were ambushed after the Pakistani-owned tanker delivered fuel to a U.S. base in southern Afghanistan.

Taleban and allied militants have stepped up attacks in recent months, often hitting soft targets associated with coalition forces and the Afghan government of President Hamid Karzai.

Some information for this report provided by AP and AFP.