Arzberg (dpa / lby) - A person was critically injured in a fire in a factory building in Arzberg in Upper Franconia (Wunsiedel district in the Fichtelgebirge). The hall of a company that produces wood lighters caught fire early Tuesday morning, a police spokesman said. The fire brigade was still fighting the fire this morning. The forces tried to prevent the flames from spreading to another hall. Police estimate the damage to be in the six-figure range. It is currently unclear how the fire started.