Joe Exotic’s prostate cancer has spread to his bladder, and he is refusing further treatment, according to a report from TMZ.

In a letter obtained by TMZ, the “Tiger King” star reveals his urologist believes the cancer has spread.

“I want to stay here and let it take its course,” he said, according to TMZ.

Exotic, who recently updated his will, will leave all of his possessions to his fiancé, Seth Posey.

TMZ reports Exotic, whose real name is Joseph Maldonado-Passage, said he “could care less about dying,” but added that his birthday was coming up and “all I want to see is Seth.”

The 59-year-old reality star of “Tiger King,” a true-crime series, still has 20 years left on his prison sentence for a murder-for-hire plot against his rival Carol Baskin.

“The world has to know just how corrupt our justice system is … If I have to be the one to die innocent in here fighting for the truth maybe people around the world will finally speak up for the truth for once,” Exotic’s letter allegedly reads as he vows to stop at nothing for justice to be served.

Prosecutors said he paid a man $3,000 to kill Baskin in Florida in 2017. Baskin had slammed him as an animal abuser in the hit Netflix show.

Mark Heim is a reporter for The Alabama Media Group. Follow him on Twitter @Mark_Heim.