Witnesses live on the 3rd floor of a building overlooking a valley located in the outskirts of the city. They were sitting watching television when they saw at 00.30 through the glass doors of a very intense white light appear for 2-3 seconds and then fall down, disappearing from view. The area was also the protagonist the last years of the apparitions of red and white lights which then disappeared down always down (CISU Sardinia - www.cisusardegna.it)