Mysterious light photographed around Wrigley building

On December 24, 2014, an American citizen took some photo of the famous Wrigley Building in Chicago (Illinois). When, he looked images, he noticed a curious and unidentified light…

Witness statement:

The Wrigley building is north of the river on Michigan avenue SE of the Intercontinental hotel. I was walking south, I took pictures of the Wrigley Building, did not see the object until I saw the photos. I looked at the photos I took with my cell phone and this is what I got. I did not see the object. The Wrigley building is stories and high, so it was higher than that.