Its a new species, they call it "Homo sapiens cognatus". They were able to collect enough samples from people across North America including bits of hair and stuff. I don't know what to think about this, however it is after all only one researcher.
http://arstechnica.com/science/2013/02/bigfoot-genome-paper-conclusively-proves-that-sasquatch-is-real/
http://arstechnica.com/science/2013/02/bigfoot-genome-paper-conclusively-proves-that-sasquatch-is-real/