Bicycle was locked with a cable combination lock, to the street lamp. I observed the vehicle, still locked and in place, around 8:45pm, and when I came back out, at about 10:15pm, it had been stolen.I spoke to the proprietor at the shoe repair shop, to see if they had surveillance video, but they did not. He had seen the bicycle parked where I left it that evening.Detailed bicycle description:Model: 2012 Trek 4500 DiscSerial number: WTU132C2811G19.5" frameBlack/charcoal colorForte Tsali mountain bike tires (non original)Forte bar ends (added, grips cut to allow bar end addition) Affymetrix white/black water bottle, in black aluminum bottle cage (only a few of these water bottles exist)Dual headlamp brackets, one on each handlebar side.Tail lamp bracketIrregular scratch on front shocks (from original shipping)Frame mounted pump on the frame: TOPEAK Road Morph G model, with bracket.I took the headlamps and tail lamp with me when I locked up the bike, but the pump was still mounted to the frame.Note: Photo below is stock photo, and does not show bar ends, pump, brackets, new tires, etc. Alpha Gold Aluminum w/semi-integrated head tube, formed down tube w/integrated gusset, formed top tube, monostay seatstay, forged dropouts w/rack & fender mounts, replaceable derailleur hanger