Bernie Madoff, who was sentenced to 150 years in prison for defrauding clients of $65 billion may be dying of cancer.

The 71-year-old is serving his sentence in Butner Federal Correctional Complex in North Carolina.

He told inmates he did not expect to live much longer, according to the New York Post.

There had been speculation during his trial that he may be suffering from pancreatic cancer.

An inmate said: “He's been taking about 20 pills a day for his cancer. He talks about it all the time. He's not doing very well."

Various inmates at the prison have reportedly tried to ingratiate themselves with Madoff, inviting him to eat sandwich wraps in their cells.

Madoff’s lawyer previously requested he be allowed to serve time in the “Jewish jail” of medium-security Otisville Correctional Institute, which has an unusually high percentage of Jewish inmates, but the request was refused.

He admitted 11 charges of fraud, perjury and false reporting in June and was sentenced to spend the rest of his life behind bars.