Bicycle detail

Bike was left unlocked on the curb, fully charged with both keys in battery , I had just arrived from garage where I park the bike if I use the car for work, walked into the store and looked for a helmet which I didn't bring from the store to the garage that morning, so I was a but distracted from my regular routine to immediately bring the bike into the store. I don't remember whether I brought the bike in or not, but an hour later I noticed that it wasn't inside nor outside. I either left it outside for too long unattended, or it was stolen from inside the store, in my opinion it's the first scenario but who knows, maybe someone took it out of the store ..