Framed abstract painting found near Market Square

I found a framed abstract painting this afternoon around 2:15pm on Market Street, near Market Square, outside the Primanti Bros. It's a 24x30 inch piece in a matte black wooden frame, with teal, copper, and charcoal swirls and a glossy varnish that catches the light. The canvas bears a signature in the lower right corner: 'L. Nguyen,' and the bottom-left corner of the frame has a small chip that reveals a lighter wood underneath. There's a faint coffee-ring stain on the back of the frame and a hairline scratch across the upper edge, nothing too dramatic but easy to spot. If you're the owner, message me here and we can arrange a quick meetup to hand it off near Market Square.