Bicycle detail

the bike was on the 8th floor of my office building, in the stairwell. The thief was a messenger, worked with Uber rush. He came up to th 8th Floor and was sent down to our showroom on the 7th Floor. He went down the stairwell, passing my unlocked bike. After picking up his package on the 7th Floor, he walked back upstairs and took my bike, and walked all the way down the stairs with it, and out the front door. I know that his name is Khimson. I have attached two photos of him, our security cameras managed to get a shot of his face.