Hofheim (dpa/lhe) - 500 to 600 hay bales are on fire on the A66 near a service area near Hofheim. The fire brigade has been there since Friday night, said a police spokesman. Due to the cloud of smoke, which is also clearly visible from the A66, a warning is given of smoke development - according to the spokesman, however, there is no concrete danger. The service area was closed for the duration of the operation, and the building was not damaged. The A66 is also freely passable, the spokesman said. The cause of the fire was initially unknown.