I did a search there,check out this link...
http://www.jewishencyclopedia.com/articles/14506-tribes-lost-ten - Tribes,Lost Ten
According to the Bible, Tiglath-pileser (II Kings xv. 29) or Shalmaneser (ib. xvii. 6, xviii. 11), after the defeat of Israel, transported the majority of the inhabitants of the Northern Kingdom to Assyria, and placed them in Halah and Habor, on the stream of Gozan, and in the towns of Media. In their stead a mixed multitude was transported to the plains and mountains of Israel. As a large number of prophecies relate to the return of "Israel" to the Holy Land, believers in the literal inspiration of the Scriptures have always labored under a difficulty in regard to the continued existence of the tribes of Israel, with the exception of those of Judah and Levi (or Benjamin), which returned with Ezra and Nehemiah. If the Ten Tribes have disappeared, the literal fulfilment of the prophecies would be impossible; if they have not disappeared, obviously they must exist under a different name. The numerous attempts at identification that have been made constitute some of the most remarkable curiosities of literature.
Read it in the bold and underline or follow the link...the proof is there...that would mean NOT JEWS,A PEOPLE WHO ARE NOT JEWS......