Kind of think this is what you might be looking for.
Humans mated with Neandertals much earlier and more frequently ...
The question of who colonized the Americas, and when, has long been hotly debated. Traditionally, Native Americans are believed to have descended from northeast Asia, arriving over a land bridge between Siberia and Alaska some 12,000 years ago and then migrating across North and South America
According to this article, the remains are Native American.
Mystery solved: 8500-year-old Kennewick Man is a Native ... - Science
