Charles Manson has been cremated in a brief, private funeral.
The ceremony came four months after the death of the man who gained worldwide infamy for the 1969 Los Angeles killings of actress Sharon Tate and others that he hoped would spark a race war.
The memorial occurred on Saturday at a funeral home in the California city of Porterville, according to Mark Pitcher, pastor of the Church of the Nazarene.
Pitcher, who presided, told The Associated Press on Monday that about 20 to 25 people attended, among them Manson's grandson, Jason Freeman, and Mr Freeman's wife, Audrey.
TMZ.com first reported the funeral at the Porterville Funeral & Cremation Center and its story included a photo of Manson in an open casket.
Pitcher said he agreed to the funeral home's request to conduct services after he was told Mr Freeman and his wife are Christians and that Mr Freeman wanted his grandfather to have "a proper burial" despite his notoriety.
The pastor declined to reveal who else attended, but said some were friends of Manson, the phoney hippie leader who inspired, with drugs and charisma, a rag-tag band of young followers to murder Tate and six others during two bloody nights in August 1969 that terrified Los Angeles.
The Porterville Recorder newspaper reported the attendees included Manson follower Sandra Good who, although she was not implicated in the 1969 killings, served 10 years in prison for sending hundreds of threatening letters to corporate executives.
Also there, the newspaper said, was Afton Elaine Burton, a woman Manson took out a license to marry in 2014 when he was 80 and she was 26. The couple never wed.
The Manson Family, as the cult leader's followers were called, slaughtered five of its victims on August 9, 1969, at Tate's home.
They included the actress who was eight-and-a-half-months pregnant, coffee heiress Abigail Folger, celebrity hairdresser Jay Sebring, Polish movie director Voityck Frykowski and Steven Parent, a friend of the estate's caretaker.
The next night, a wealthy grocer and his wife, Leno and Rosemary LaBianca, were stabbed to death in their home across town.
Prosecutors said Manson ordered the killings to launch a race war he believed was prophesied by Helter Skelter, a Beatles song about a popular British playground slide.
During the service Mr Pitcher said he quoted from Scripture both meaningful to him and Mr Freeman, and although he said he discussed Manson's past only briefly, he added he did not shy away from relating what he had done.
"There were many choices thrust upon him that brought about very challenging circumstances through his early years," he said of Manson, the son of a prostitute who never knew his father.
"But he also made choices that brought great consequence and negatively impacted other people for many, many years."
Pitcher said he exhorted Mr Freeman and his family to see Saturday's funeral as an opportunity to establish "a new beginning" of making good choices.
Mr Freeman, whose own father killed himself under the burden of being Manson's son, has said he only learned of his connection to the mass killer a few years ago.
After Manson's death in November at age 83, Mr Freeman fought a months-long legal battle to gain the right to his remains.
Freeman, who could not be located for comment, has said he wanted his grandfather cremated and his remains scattered to finally put to rest "this so-called monster, this historical figure that shouldn't have been blown up as big as it was for all these years".
The funeral home's owner, Les Peters, told the Recorder that after the service, which he described as having a hippie vibe, the guests gathered to watch the cremation, then went outside to sing songs by Manson, the Beach Boys and Guns 'N Roses.
Mr Peters said Manson's ashes were handed over to Mr Freeman who said he planned to spread them "free in the air" somewhere.