 University of Minnesota police are asking for the public's help in locating a 12-year-old child who's been missing since Monday. Authorities say Amaya Whitefeather, also known as Ray, was last seen on Monday afternoon exiting a light rail train and walking north on Nicklip Mall in downtown Minneapolis. Whitefeather is described as 5'2 and 180 pounds with dark shoulder-length hair and brown eyes.