Kertajaya was killed by Ken Arok from Tumapel or Singhasari, which ended the period of the Kediri Kingdom.
Although Prabu Dandhang Gendis showed his magic by sitting cross-legged on a sharp spear that stood up.
they chose to take refuge in Ken Arok, a subordinate of Dandhang Gendis who became an akuwu (currently a camat level position) in the Tumapel area.
Ken Arok then made himself king and declared the Tumapel region as an independent kingdom, separated from Kediri.
Hearing this, Ken Arok took the title Bhatara Guru (another name Shiva) and moved to lead the troops to attack Kediri.
The warlords Kadiri namely Mahisa Walungan (Dandhang Gendis' sister) and Gubar Baleman died at the hands of Ken Arok.