Light in the sky moved zig zag pattern

It was early morning and very dark. The light in the sky was first observed as it moved from the western sky and was moving east. It looked like it could be a plane as it was about the right height. It looked like it could be a star as it was a single light. It glowed the same color as a star would. There were no additional lights associated with the object.
The object moved faster than the planes we typically see pass overhead and it moved in a zig zag pattern as well as moving in a straight path from west to east. The zig zag movement did not appear to be overly broad as it deviated from a straight line of flight, but the motion was noticeable enough to attract our attention. The zig zags did not appear to be a part of a standard pattern. The object flew in a straight line for a matter of seconds, would zig right, zig left, return to original flight path heading east...a second or so later the object would again move in a random pattern left and right and then return to the original flight path. It continued flying east until it flew out of sight.