Sighting in Menton, April 10, 2010

The witness reported in November 2011 something they had seen on the morning of 10 April 2010, at about 6:23 a.m. They saw a bright white-yellow sphere of light pass over the neighbouring residential building. After about five seconds, they noticed it was moving slowly in a straight line toward another building. It then vanished quickly, climbing into the sky without making any sound.

The description resembled an aircraft seen head-on with its landing light on. However, the object was silent, and the witness, who was used to watching the sky at that time of day, did not recognise it as an aircraft. For lack of sufficient information, the case was first classified C.

An internet user later suggested that it might have been a pass of the International Space Station. GEIPAN confirmed this: at that exact time, the ISS was following precisely that trajectory, as shown by a Calsky screenshot included in the investigation material. The case was therefore reclassified A: an observation of the ISS.