On April 11, 2012, Manson was denied release at his 12th parole hearing, which he did not attend. Since his March 27, 1997 parole hearing, Manson refused to attend any of his future hearings. The panel at that hearing noted that Manson had a "history of controlling behavior" and "mental health issues" including schizophrenia and paranoid delusional disorder, and was too great a danger to be released. The panel also noted that Manson had received 108 rules violation reports, had no indication of remorse, no insight into the causative factors of the crimes, lacked understanding of the magnitude of the crimes, had an exceptional, callous disregard for human suffering and had no parole plans. It was determined that Manson would not be reconsidered for parole for another 15 years (i.e. not before 2027, at which time he would have been 92 years old
On September 25, 1984, Manson was imprisoned in the California Medical Facility at Vacaville when a fellow inmate, Jan Holmstrom, poured paint thinner on him and set him on fire, causing second- and third-degree burns on over 20 percent of his body. Holmstrom explained that Manson had objected to his Hare Krishna chants and verbally threatened him.