CHAMAN: A suicide bomber hit a vehicle of NATO forces in Spin Boldak Thursday. According to details a suicide bomber hit his vehicle with NATO forces caravan near Shaista Pump in Spin Boldak today. Spin Boldak is about 7 Km from Pak-Iran border at Afghan territory. Eye witness told that smoke was seen with a big explosion. NATO forces opened fire on Suicide bomber who was killed instantly. Explosive in his vehicle also exploded but NATO forces caravan was not harmed.