A YouTube-released video shows what appears to be a Sphere UFO which releases dozens of small, orb-like UFOs into the sky.
The YouTube page shows an upload date of July 5, 2009.
The Mexico City video footage - by witness Pedro Hernandez - is amazingly interesting to watch. He was riding a bus at the time of the original sighting on May 22, 2009, at 5:40 p.m. This video has received more than 382,000 page hits, and more than 3,200 comments by viewers.
The witness says he was able to get the bus to stop so that he could get out and continue to video tape the UFO.
I will update this page if there is more information about the interview. There is some English translation within the video.