In the 480's the Alchon Huns under Toramana and Mihirakula broke through the Gupta defences in the northwest, and much of the empire in the northwest was overrun by the Huns by 500. According to some scholars the empire disintegrated under the attacks of Toramana and his successor Mihirakula. It appears from inscriptions that the Guptas, although their power was much diminished, continued to resist the Huns. The Hun invader Toramana was defeated by Bhanugupta in 510. The Huns were defeated and driven out of India in 528 by King Yashodharman from Malwa, and possibly Gupta emperor Narasimhagupta.