The cause of death of cult leader Charles Manson has been revealed.

TMZ reported Monday that the death certificate of the mass murderer was released by the Kern County coroner. It reveals that Manson had colon cancer, which is listed as one of the causes of death.

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At the time of Manson's Nov. 19 death, the California Department of Corrections and Rehabilitation said he died of natural causes.

Related: Charles Manson dead at 83

The death certificate said Manson's immediate cause of death was cardiac arrest. Underlying causes include respiratory failure and metastatic colon cancer.

FILE - This Aug. 14, 2017 photo provided by the California Department of Corrections and Rehabilitation shows Charles Manson. A legal battle has arisen for his remains and belongings since his death Nov. 19 at the age of 83.
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Manson’s age at his death is listed at 83. Where Manson was born, his marital status, education and parents are all listed as “unknown.”

Related: Charles Manson death: Notable reactions on social media

The remains and estate of the cult leader are part of an emerging battle. The Associated Press reported that Manson associate Michael Channels, Manson's purported grandson, Jason Freeman, and Los Angeles musician Matthew Roberts, who is claiming to be Manson's son, are among those seeking control of the estate.