The sinking Millennium Tower in San Francisco has another problem.
A cracked window on the 36th floor that’s prompted San Francisco officials to issue a citation requiring building engineers to report on the condition of the glass panel.
The window cracked early Sunday morning.
“At this time, we do not know what caused this fracture, though it appears to be limited to this one specific unit,” Bill Strawn, spokesman for the San Francisco Department of Building Inspection, said in a statement.
The 58-story residential tower has sunk more than 17 inches since it opened in 2009.