Bicycle detail

I was in the process of loading my stuff into my truck to leave town. Had my bike unlocked outside of my apartment on the 3rd story (well out of the way, almost no foot traffic) while I prepared to leave. It was usually locked but I was getting ready to pack it. Was in my apartment for a short while packing. Came out and found it had been stolen. It was around 11 am while there were many people around. Students leaving town, landscapers and contractors working. No one saw anything.