I arrived at the property for a party at about 6:30 pm, then left the bike unlocked inside the yard leaning on the fence (on the left hand side) with a U-lock locked to the frame (it doesn't do anything, the wheels can still move freely). I left the property at about 11pm and found my bike was missing. The bike is black with white letters, and equipped with a cargo rack, bike stand, bottle rack, basket and bike light(rear and front). The bike was bought 2 months ago (on August 31) and was in good condition at the time of incident. The yard has a gate which allows residents with keys to enter, but the fence is not high so in principle unauthorized people can still pass over it with some efforts. There is also a camera attached to the wall right above the fence. It should probably have recorded everything during that period, but it is unclear if that camera is for private or public.