Chatters "et al." conducted a graphic comparison, including size, of Kennewick Man to eighteen modern populations. They found Kennewick Man to be most closely related to the Ainu, an ancient indigenous people of Japan. However, when size was excluded as a factor, no association to any population was established. Chatters said that anthropologist C. Loring Brace classified Ainu and Polynesians as a single craniofacial Jomon-Pacific cluster, and Chatters said "Polynesians have craniofacial similarities to Asian, Australian and European peoples". Brace said in a 2006 interview with the "Tri-City Herald" that his analysis of the skeleton suggested that Kennewick Man was related to the Ainu.