Triangular UFO observed in VIllemomble in 1986

Summary

On October 6, 1986, around 7:45 PM, two witnesses in VIllemomble (France) observed a triangular object moving at high speed and silently. The object was seen traveling from east to west at an estimated altitude of about 600 meters. Despite the clear description of the object, no further information was gathered. This event was classified by the GEIPAN as "C," indicating no conventional explanations were found. The object's description and behavior remain a mystery.