Triangular UFO sighted in Toulouse in 2010

Summary

On June 12, 2010, a group in Toulouse observed a black triangular object in the sky. Initially appearing stationary, it then ascended rapidly before disappearing behind a cloud. The GEIPAN report suggests it could have been a weather or toy balloon, considering the wind from the northeast and the sun's position. The object's shape and movement align with a balloon filled with hydrogen or helium. The "B" classification indicates it's likely a common balloon, not an unexplained phenomenon.