It appears that the mysterious lights seen over Phoenix Monday evening have a fairly ordinary explanation. A man has claimed his neighbor launched several helium balloons tied to flares from his back porch. A pilot with the Phoenix Police Department says he also saw what appeared to be balloons with flares floating in the same area that night. The FAA says it is not investigating the incident. The witness says he thinks the neighbor did it as a joke. Several Arizona residents had reported seeing the strange lights in the sky over Phoenix Monday evening. A resident managed to capture the lights on camera. The lights were seen hovering over the city for roughly 13 minutes Monday night.
Here's one of the original news reports: