Bicycle detail

Bike was parked at the end of private driveway and hooked up to trailer towing groceries. Left bike and trailer in the driveway for over an hour while unloading groceries (and forgot about it). Returned to find assailant had unhooked trailer, and taken the bike. Bike is in great condition with a a Bontrager spedometer and white light on the front, red lights on the back, and heavy duty Kryptonite U-Lock on the frame under the seat. Thank you for your assistance.