The bike was located in the basement laundry store/room. The last time the bike was used it was placed along the wall without any lock, as the outside door was locked and one needs to go through another door to enter this room. Upon returning to the laundry room a few months later, the bike was missing. Surveying the room there was still one bike(from a previous tenant) and two bikes in the stairwell, only my Trek 820 Mountain Bike was taken along with my yellow helmut. Note: the room can also be used to exit the basement of the tenants first floor apartment. Therefore, understanding only the apartment tenants would have access to this room, I confronted the residents in apartment #1. They claimed they were unaware of any missing bike. I called the landlord to ask if by chance she had taken the bike to which she responded no and was concerned regarding the theft in the building. She promptly wrote a note addressing the seriousness of this situation, the tenants responsibility for guests and required locking of all doors. I have asked for further investigation into this matter considering their bikes remained untouched in addition the person who took my bike even had the audacity to take my yellow bike helmut that was hanging from the handle bars.