The king Ahsheri, who ruled until the 650s BCE, continued to enlarge the territory of Mannae, although paying tribute to Assyria. However, Mannae suffered a crushing defeat at the hands of the Assyrians around 660 BCE, and subsequently an internal revolt broke out, continuing until Ahsheri's death. Also in the 7th century BCE, Mannae was defeated by the advancing Scythians, who had already raided Urartu and been repelled by the Assyrians. This defeat contributed to the further break-up of the Mannaean kingdom.