We noticed a strange looking light in the sky. At first we thought it was some kind of advertising. It was hard to determine the shape of the object as all we could see were uneven lighting around the edges of it. It flew east and then south. We followed it and it started to hover. It was quite high in the sky. It appeared that it turned over on its side and we saw four small lights in the shape of a square with a faint circle joining all the lights. While in the sky a plane came from the north and circled the object. It then flew back north from where it came. All of the sudden the object was gone.