Yesterday I was doing repeats on the local high school track. I noticed a guy arriving on a pretty nice bicycle. Looked like some type of racing bike. I figured he was riding to the track and then we has gonna run or something, but to my surprise he rides right onto the track. He starts riding in lane 1 and pulls up right behind me and says "Passing". I didn't know what to do so I moved to lane 2. He rode around the track for a while but he left before I did.
What should I say to him if I see hime again? Should I call the cops.