stolen 2012 Marin Bikes Muirwoods 29er

At 8 AM I parked my bicycle in the bicycle rack outside the main entrance to the building. The rack is on the building wall. I locked the front wheel and the frame to the bicycle rack using a key lock and cable. I locked the back wheel to the bicycle frame, also using a key lock.I did not go outside during the day. I polled my co-workers and they didn't see anything suspicious during the day when they were out and about. (We work on the third floor, the bicycle rack is not in view.)At 7:00 PM I walked out the front entrance of the building and the bicycle was gone. No other bicycles were on the rack. There was no evidence of method of removal that I could find.