Ezra 4:7

And in the days of Artaxerxes, commonly known as Artaxerxes Longimanus, who reigned from 465 to 424 B. C. wrote Bishlam, Xithredath, Tabeel, and the rest of their companions, evidently all of them Samaritans, unto Artaxerxes, king of Persia; and the writing of the letter was written in the Syrian tongue and Interpreted in the Syrian tongue, that is, both the writing and the language were Aramaic. Even at this late day they did not give up their hostility, but made another attempt to prevent the growth of Jerusalem and the building of its walls.