For the first time a magnetospheric line current entering the ionosphere has been unambiguously observed. The observation was made with STARE ( = Scandinavian Twin Auroral Radar Experiment), a ground based coherent radar system, which has been updated with modern computer technique, and recently taken into operation. A counter clockwise turning swirl of ionospheric electron drift velocities is synonymous with the presence of a line current flowing along the geomagnetic field lines into the ionosphere. A Flux Transfer Event on the magnetopause has been predicted to connect to the ionosphere via a line current.