Esdras 8:15

15 I assembled them at the canal that flows toward Ahava, and we camped there three days. When I checked among the people and the priests, I found no Levites there.

15 And I gathered them together to the river that runneth to Ahava; and there we encamped three days: and I viewed the people, and the priests, and found there none of the sons of Levi.