Charles Manson's "lovechild" has reportedly lost his claim to force the killer's "grandson" to hand over the mass-murderer's DNA in a bid for his $1million estate.
Estate agent Daniel Arguelles, 62, claims he's Manson's "biological son" and should inherit his multimillion dollar estate after his mum reportedly had a one night stand with the killer back in 1959.
It is reported he was requesting Jason Freeman and Michael Channels, who have both challenged Manson's estate, to provide samples of the murderer's DNA in a bid to try and prove his claim, according to Mail Online.
Mr Freeman, who alleges he's Manson's grandson, was given the killer's body in 2017 by a judge and is "in the unique position of providing DNA evidence….including but not limited to remains, hair, skin, ash, teeth or other samples from decedent…..that could be tested against the DNA of Arguelles."
In addition, it is reported his lawyers argued that Mr Channels, who claims Manson gave him his music, art and writings, "may have secured DNA evidence of the decedent."
But on Wednesday, Judge Ruben Garcia reportedly refused Mr Arguelles's bid to get both of the men to surrender Manson's DNA believing he failed to provide a "legal basis."
He also reportedly turned down an attempt to get the coroner's office in Kern County, California, where Manson died, to give any of his DNA which is stored on file.
Judge Garcia said in a written ruling: "'The motion here is denied. Petitioner (Arguelles) has not provided a legal basis for compelling either Freeman, Channels or the Kern County Coroner to turn over the genetic material allegedly in their possession."
It is also claimed the laws citied by Mr Arguelles's lawyers "do not provide a procedural mechanism via which the court may order Freeman, Channels or the Kern County Coroner to turn over genetic material to (Arguelles) to permit genetic testing."
The ruling comes after a messy five-year battle to get hold of Manson's estate has led to Judge Garcia postponing multiple other petitions and counter-petitions until July 5.
The day before a court hearing in August, Mr Freeman was certain he would win his case until Mr Arguelles came in at the last minute filing legal papers alleging he was the murderer's "biological son" after his mum had reportedly had a one-night stand with Manson in 1959.
The court document alleged: "Petitioner (Arguelles) alleges that on or around January 25, 1959, petitioner's mother and dependent (Manson) conceived petitioner in a one-night encounter."
Mr Arguelles' mum, who died in 2020, told him his dad was James Arguelles until 1981 when his "mother informed him that James Arguelles was not his father and that she did not know who his real father was."