UFO shown on Mexican news

This image is from a video broadcast on the 28th of September 1997, in a program called "Tercer Mileniooe" hosted by Jaime Maussan.
Maussan is a well-respected Mexican Ufologist. This program is on every weekend in Mexico. On it you see a huge UFO hovering over a building. He estimated its size at 20 meters. You can clearly see the UFO is rotating over its axis. It has a very peculiar motion, as if earth's gravity is affecting it as it flies. For a few seconds the UFO stays fairly static, then it begins to move. It travels from left to right and goes behind a building, reappearing again on top of the same building. It keeps travelling at a slow pace until it goes behind a second building and we never see it again. On the audio you can hear the voices of two guys very excited, shouting and screaming as they tape the UFO. Maussan analysed the video by testing various display modes with a computer and by zooming digitally on the image. He concluded it was highly likely that is was genuine. The following week on his television broadcast of October 5th he continued the investigation. He went to the site where the video was shot and found several witnesses that corroborated the event. He was calling it the Supreme evidence of the UFO Phenomena. He said that it was the best video in existence of a UFO, and that he would continue with the investigation.
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