Joshua 8:25

23They captured the king of Ai alive, and brought him to Joshua.

24When Israel had finished killing all the inhabitants of Ai in the field, in the wilderness in which they pursued them, and they had all fallen by the edge of the sword until they were consumed, all Israel returned to Ai and struck it with the edge of the sword.

25All that fell that day, both of men and women, were twelve thousand, even all the people of Ai.

26For Joshua didn’t draw back his hand, with which he stretched out the javelin, until he had utterly destroyed all the inhabitants of Ai.

27Israel took for themselves only the livestock and the goods of that city, according to the LORD’s word which he commanded Joshua.