Keith was one of five victims of Ian Brady and Myra Hindley, with three of them later found buried on the moor.
Greater Manchester Police (GMP) began searching the area on 29 September but on Friday said there was “no evidence of the presence of human remains”.
Detective Chief Inspector Cheryl Hughes said: “The investigation into Keith’s disappearance and murder has remained open since 1964 and it will not be closed until we have found the answers his family have deserved for so many years.
“The excavation and examination at the site is complete and, to reiterate, we have found no evidence that this is the burial location of Keith Bennett.”
Author Russell Edwards told the Daily Mail he believed he had located Keith’s makeshift grave following “extensive soil analysis” which indicated the presence of human remains.
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Mr Edwards is said to have commenced his own dig – close to where the other Moors murders victims were found – and uncovered a skull with teeth, which independent experts are reported to have concluded is human.
DCI Hughes said officers “met with the member of the public who later provided us with samples and copies of the photographs he had taken”.
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“He also took officers to the location from which he had obtained these and provided grid references,” she added.
The senior investigating officer said experts had completed an examination of the site, adding: “The items given to us by the member of the public have been examined by a forensic scientist and though this hasn’t yet indicated the presence of human remains – more analysis is required.”
GMP previously said it was provided with a photo showing what experts working with Mr Edwards had interpreted as a human jaw bone.
But DCI Hughes said on Friday: “At this stage, the indications are that it would be considerably smaller than a juvenile jaw and it cannot be ruled out that it is plant-based.”
Keith Bennett’s brother Alan had previously expressed doubt that the author’s findings would turn out to be the remains of his sibling.
Writing on Facebook after the search of the site began, he said he “cannot escape the feeling that we have been here before”.
Brady and his accomplice Hindley sexually assaulted, tortured and murdered children over two years in the 1960s.
While the bodies of four of their victims were discovered, Keith’s remains have never been found.
Keith was last seen by his mother in the early evening of 16 June 1964 after leaving his home in Longsight, Manchester, on his way to his grandmother’s house nearby.
Brady told Hindley he sexually assaulted and strangled the boy.
Despite a plea to Brady from Keith’s mother, Winnie Johnson, to reveal the details of where her son’s body was, holding back the information was believed to be the killer maintaining a last element of control.
Mrs Johnson died in 2012 without fulfilling her wish to give him a proper Christian burial.
Brady confessed to Keith’s murder but claimed he could not remember where he was buried.
Brady and Hindley’s other victims were 16-year-old Pauline Reade who disappeared on her way to a disco in July 1963; 12-year-old John Kilbride who was snatched in November the same year; Lesley Ann Downey, aged 10, who was lured away from a funfair on Boxing Day 1964; and 17-year-old Edward Evans who was axed to death in October 1965.
The killers were caught after the Evans murder and Lesley and John’s bodies were recovered from the moors.
Hindley died in jail in 2002 at the age of 60, while Brady died in a high-security hospital in 2017 aged 79.
North Yorkshire Police said: “Despite extensive enquiries, including with our colleagues in Humberside and West Yorkshire Police, we have been unable to identify him.
“He was found without any identification or personal belongings.”
The man was also described as white, in his early 50s to 60s, with light brown short hair and stubble.
He was wearing brown walking boots, blue denim jeans, a multicoloured knitted jumper and possibly a dark green waterproof coat, police added.
It comes after Leicestershire and Lincolnshire both declared a major incident in response to the extreme weather hitting the UK and Ireland.
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Leicestershire Fire and Rescue was the first emergency service in England to declare an incident and said it had received more than 200 calls since Monday morning over widespread flooding.
Crews had found cars stuck in floodwater and evacuated residents from flooded homes and rising waters, with some 17 people rescued as of 1.45pm.
The Lincolnshire Resilience Forum declared a major incident shortly after, and noted that emergency services had rescued children who were stranded at a school in Edenham.
Meanwhile, the Met Office has three yellow weather warnings – each for snow and ice – in effect throughout Monday evening and Tuesday morning.
A warning covering the west and north coast of Scotland – reaching into Inverness and Aberdeen – will last until midday, while an alert in effect for all of Northern Ireland will last until 11am.
The Met Office has also issued a warning covering Wales and parts of northwest England on Monday evening, moving into southwest England, the Midlands and parts of southern England in the early hours of Tuesday.
On Wednesday, a yellow weather warning for snow is in effect across the south of England – stretching from just above Truro in Cornwall to Canterbury in Kent – from 9am to midnight.
A man has been charged following reports of threats towards Labour safeguarding minister Jess Phillips, Sky News understands.
Jack Bennett, 39, has been charged with three counts of malicious communications, Devon and Cornwall Police said.
The messages were sent between April 2024 and January 2025 involving three victims, including the Birmingham Yardley MP.
It is understood the accused, from Seaton, east Devon, was charged over the weekend.
He has been bailed to appear before Exeter Magistrates’ Court on 18 February 2025.
Earlier on Monday, Prime Minister Sir Keir Starmer spoke about a “line being crossed” regarding comments towards Ms Phillips and said that she had been receiving threats.
This breaking news story is being updated and more details will be published shortly.
The charge said the 31-year-old “wilfully and without reasonable excuse or justification misconducted yourself in a way which amounted to an abuse of the public’s trust in the office holder by engaging in a sexual act with a prisoner in a prison cell”.
Tetteh Turkson, of the Crown Prosecution Service, added last year that the incident was “a shocking breach of the public’s trust,” and that De Sousa Abreu “was clearly an enthusiastic participant who wrongly thought she would avoid responsibility”.
“The CPS recognises there is no excuse for any prison officer who conducts themselves in such a manner, and we will never hesitate to prosecute those who abuse their position of power,” she added.
“After working closely with the Metropolitan Police to build the strongest possible case, De Sousa had no option but accept she was guilty. She will now rightly face the consequences of her actions.”
This breaking news story is being updated and more details will be published shortly.
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