Midnight blue tuxedo jacket, 42R, Brooks Brothers

I’m really worried—yesterday around 7pm after the charity gala, I realized my midnight blue tuxedo jacket was gone. It’s a Brooks Brothers, size 42R, slim-fit with satin peak lapels and a black satin tie still tucked in the breast pocket. The jacket is in decent shape overall, but there’s a tiny coffee stain on the inner lining and a small snag on the left sleeve. Inside the left pocket, there’s a pale monogram 'AP' on the lining and a white pocket square that I’d love to recover. I wore it at the Clovis Civic Center area and I left it on a chair near the Main Street entrance—please help me get it back.