Joshua 8:23-29

23And the king of Ai they took alive, and brought him to Joshua. 24And it came to pass, when Israel had finished slaying all the inhabitants of Ai in the field, in the wilderness in which they chased them, and when they had all fallen on the edge of the sword, until they were consumed, that all the Israelites returned to Ai, and smote it with the edge of the sword. 25And so it was, that all that fell that day, both of men and women, were twelve thousand, even all the men of Ai. 26For Joshua drew not his hand back, with which he stretched out the spear, until he had utterly destroyed all the inhabitants of Ai. 27Only the cattle and the spoil of that city Israel took for a prey to themselves, according to the word of the LORD which he commanded Joshua. 28And Joshua burnt Ai, and made it an heap for ever, even a desolation to this day. 29And the king of Ai he hanged on a tree until evening: and as soon as the sun was down, Joshua commanded that they should take his body down from the tree, and cast it at the entrance of the gate of the city, and raise over it a great heap of stones, that remaineth to this day.