Beagle mix, brown/white, lost near Monument Circle

I lost my beagle mix around 3pm yesterday near Monument Circle in downtown Indianapolis. He's medium-sized, about 30 pounds, brown and white with a white blaze on his chest, and floppy ears. He wears a blue collar with a silver bone-shaped tag that says 'Milo' on the back. There's a tiny scar behind his left ear from a playful tumble last week, which should help identify him. He usually comes when I call, but the area around the circle can be loud and scary, and he's skittish. This dog has sentimental value to me and my kids—I'm really hoping to get him back safe.