During the fighting the army of Israel chased the men of Ai into the fields and desert and killed all of them. Then they went back to Ai and killed everyone there.
Israel killed the king and captured his land from the Arnon River to the Jabbok River. They took the land as far as the Ammonite border, which was strongly defended.
So the Benjaminites ran away from the Israelites toward the desert, but they could not escape the battle. And the Israelites who came out of the cities killed them.