Ezra 5:5-6

But the eye of their God was upon the elders of the Jews, and they did not make them cease, till the matter should come to Darius, and then answer should be returned by letter concerning it. The copy of the letter that Tattenai, the governor beyond the River, and Shethar-bozenai, and his companions the Apharsachites, who were beyond the River, sent unto Darius the king