Several people reported seeing four lights forming various formations above the Valley Monday night.

Tony Toporek was talking with his neighbors in north Phoenix when the lights appeared at about 8 p.m.

He grabbed his video camera and started taping.

Witnesses reported that the lights formed a vertical line, then formed a diamond-shape, followed by a u-shape.

The lights reportedly moved from side to side and upward before disappearing one by one.

Toporek said the last light vanished and then briefly reappeared before disappearing again.

ABC15 contacted several agencies Monday night, including the FAA, Sky Harbor, Luke Air Force Base, and the Phoenix Police Department. No one could explain what the lights are.