stolen 2010 Cervélo S1 Force

I lock my bike within a secure bike storage within my apartment's building. The bike storage is located in the basement parking garage of the building, and the bike storage is secure so that a key fob can only access the bike storage. I locked my bike on January 1, 2019 in the bike storage (locked using a Kryptonite U-Lock to one of the bike stalls), and then returned to the bike storage to use the bike on January 21, 2019 and found out the bike was missing. I am not aware of how the thief got into the building or bike storage, nor how the U-Lock was removed from my bike (i.e. force, cut, etc.). I am trying to obtain security footage of the incident from my apartment building, and will update this report if I am able to obtain.