Small grey dwarf hamster with pink nose

I lost my small grey dwarf hamster yesterday around 3pm. He lives in a Habitrail cage with a blue water bottle and a chewed wooden wheel; I had him in a small carrier in the backseat while I ran errands near the H-E-B on San Dario Ave in Laredo. He’s about 2 inches long, with a distinct tiny white dot behind his right ear and a faint white underbelly that makes him easy to spot if you see him scurrying around. This little guy is more than a pet to me—he was a gift from my sister who passed away last year, and I’m really hoping to get him back safe.