Deputy provincial governor Aziz-ur-Rahman Tawab confirming the reports said at least five civilians were killed and over ten others were wounded following the blast.
Mr. Tawab further added the suicide bomber was looking to target a convoy of the NATO troops however the bomber detonated explosives packed in the vehicle near a residential house.
The incident took place in Jalo Khel area at Tagab district.
In the meantime Taliban militants group claimed responsibility behind the incident and a spokesman for the Taliban group Zabiullah Mujahid claimed at least 12 US troops were killed and two tanks were completely damaged following the attack.
The NATO-led International Security Assistance Force (ISAF) confirmed the attack. “According to our reports, there was a vehicle attack on the coalition convoy in Tagab district, but we have no reports of coalition deaths or injuries,” said Les Carroll, an ISAF spokesman.