A strong light bellow the Donau, maybe on yugoslavian teritory. A light like a shining star with irization, with green mouving filaments. There are rapid movements up and down, aprox. one hour((NUFORC Note: Date is approximate. Given the relatively long duration of the sighting, we wonder if the witness ruled out the possibility of a twinkling star, perhaps Sirius, which is quite bright. We do not know what the witness observed, and are grateful for the report. PD))