A suicide bomber targeted a military convoy of North Atlantic Treaty Organization (NATO) Resolute Support mission on Monday killing at least 8 people and wounding 28, including three coalition members, public health officials said.
The Islamic State (ISIS) group later claimed responsibility for the attack. The suicide bomber attacked a group of armoured personnel carriers designed to withstand large blasts.
Interior ministry spokesperson Najib Danish said the blast targeted a "convoy of foreign forces passing the area". Reports state the blast also damaged various civilian vehicles near the NATO convoy.
"We are checking the details...Unfortunately most of (the victims) are civilians," the official told AFP.
"We are still checking the nature of the explosion, but I confirm a convoy of foreign forces was passing by when the explosion happened," he said. According to the witnesses, traces of blood and clothing could be seen at the blast site.
NATO said three coalition service members had received "non-life threatening wounds" in the attack.
"(They) are in stable condition, and are currently being treated at coalition medical facilities," a US Forces-Afghanistan spokesperson said, without confirming their nationalities.
ISIS claimed the responsibility of the attack through its Amaq propaganda agency. The militant groups said that the eight people who died in the attack were all American soldiers. However, the organisation is known to exaggerate their claims of the causualties.
The attack on the foreign convoy came three weeks after the Untied States dropped its largest non-nuclear bomb on ISIS hideouts in eastern Afghanistan, killing several militants.
At least three civilian cars were damaged in the blast, with one ablaze, while windows of other vehicles were shattered.