At least 80 people have been burned alive when a fuel tanker truck exploded in southern Nigeria. Reports said, the truck hit a pothole and overturned yesterday on the road between Onitsha and Enugu. Witnesses said the truck exploded when a policeman who wanted to distance inquisitive onlookers fired his gun in the air. They said immediately the policeman shot into the air, the tanker burst into flames that engulfed other vehicles that were close by and also trapped some of the people gathered around the scene. At least five minibuses packed with up to 18 passengers each and two cars were incinerated by the fireball. A witness said one of the minibuses was filled with schoolchildren, all of whom were burned alive. <br/><br/>