Joshua 10:39-40

He captured it with its king and all its cities, and they struck them with the edge of the sword, and utterly destroyed every person who was in it. He left no survivor. Just as he had done to Hebron, so Joshua did to Debir and its king, as he had done also to Libnah and its king. So Joshua struck all the land, the hill country, the Negev (South country) and the lowland and the slopes [that descend to the Dead Sea] and all their kings. He left no survivor, but he utterly destroyed all who breathed, just as the LORD, the God of Israel, had commanded. [Deut 20:16]