Diamond-shaped luminous object over Montaigu

Summary

In May 2008, a person in Montaigu observed a luminous object resembling a three-dimensional diamond moving silently northward before vanishing on the horizon. The witness contacted GEIPAN after reading an article about similar phenomena. Analysis concluded it was most likely a Thai lantern. The case was classified as B, and its detailed description is useful for understanding the kinds of objects that can be mistaken for unidentified aerial phenomena.