Golden-brown hamster with white belly

I lost my golden-brown hamster with a white belly yesterday around 3pm. It's about the size of a ping-pong ball, with a pink nose, a slightly ruffled left ear, and a tiny white stripe along its left hind leg. I last saw him near the Texoma Pet Emporium on Oak Street, by the town square, behind the cafe patio. His name is Niko, and he's been with us since we rescued him—my daughter is really attached, so this little guy means a lot to us. If you’ve seen him, please contact me; any tip helps, and I’d be grateful to get him back.