Xavier Dupont de Ligonnès is said to have been arrested in Glasgow – a source close to the investigation, however, said the DNA test was "negative".
DNA tests showed that a Frenchman arrested at the Glasgow airport was not suspected of the murderer Xavier Dupont de Ligonnes.
De Ligonnes was said to have been on the run after the bodies of Agnes (48) and the children Arthur (20), Tomas (18), Anne (16) and Benoit (13) were buried in the garden of the family house in Paris Nantes, Western France, along with her two pet labradors.
French sources of justice had announced Friday that police at Glasgow airport had arrested Xavier Dupont de Ligonnes, who had been issued with an international arrest warrant for the 2011 killings that had brought France to a standstill.
But on Saturday, sources near the probe said a DNA test of the detained man in Scotland was "negative."
The detained man was stopped in Glasgow after he came across an anonymous reference to a flight from Paris. This is evident from French sources close to the investigation.
The Scottish police had issued a statement stating, "On Friday, October 11, a man was arrested at Glasgow Airport and remains in police custody in connection with a European arrest warrant issued by the French authorities.
"We continue to ask for confirmation of his identity, and we continue to work with our colleagues in the appropriate agencies."
French media had previously reported on Saturday that the fingerprints of the man partially matched those of the alleged aggressor.
A witness involved in the case told Ouest France (Western France) that De Ligonnès had managed to start a new life in Scotland.
"A very reliable source states that the refugee remarried, even in the UK," the newspaper said. There was no indication that this information had been forwarded to the police.
Xavier Dupont de Ligonnes, pictured with Ms. Agnes, 48, was the subject of an international arrest warrant for the 2011 murders in a mystery that pierced France
He is said to have been on the run after the bodies of 49-year-old Agnes and the children Arthur (left), 20, Thomas (right), 18, Anne (16) and Benoit (13) were buried in the garden of the family house in Nantes, western France, along with their two pets Labradors
He is suspected of having his family shot and buried under the terrace of their elegant townhouse in the western town of Nantes. On the left is Anne, 16. Right: Benoit, 13
The bodies of Arthur, Thomas, Anne and Benoit (picture) aged 13 to 20 were found on April 21, 2011 in the garden of their home
He is said to have used a passport of a man named Guillaume Joao. Joao's home in Limay, in the Yvelines department, 65 km from Paris, was searched by the police.
"Mr. Joao does not look like De Ligonnès, and the man who was arrested in Glasgow was not," said a French investigator.
"It may be that De Ligonnès has radically dressed up over the years, but there are still many questions to answer.
& # 39; Digital fingerprint identification was only partial – so French forensics are on their way to Glasgow. DNA tests are already running. & # 39;
The suspect of De Ligonnès has been silent since his arrest, while the prosecutor of Nantes, Pierre Sennès, called for "caution".
Barriers at the front of a house in Limay, northwest of Paris, reportedly home to the man arrested at Glasgow Airport in late October
Xavier Dupont de Ligonnes, pictured directly in the garden of his house in Nantes in August 2003 (left: His wife Agnes)
Relatives and friends attend a memorial service in front of the church of Saint Felix in the French western town of Nantes on April 28, 2011 in memory of the Dupont de Ligonnes family
This file, taken on April 14, 2012, shows people laying flowers in front of the Dupont de Ligonnes family home as part of a silent march in the streets of Nantes, western France
"It will be examined if it really is Mr. De Ligonnès," said Mr. Sennès.
Stéphane Goldstein, attorney for De Ligonnès & # 39; s sister Christine, who believes he's innocent of the killings, said, "We're waiting for the scientific endorsement that he really is Xavier Dupont de Ligonnès."
Another source said, "He did not try to resist the arrest, but the information was accurate on a Europol search card. It is now double checked. & # 39;
Two French sources close to the investigation said the aristocratic businessman was stopped at Glasgow airport on Friday after arriving on a Paris flight.
The sources confirmed that a fingerprint match had been made, but one said that a DNA analysis was done to be "absolutely sure" that it was him.
Another source said Dupont de Ligonnes had traveled with a stolen French passport and probably spent part of his time in the UK.
During the funeral, people hold the coffin of a member of the Dupont de Ligonnes family in their hands
A police officer stands in front of the residence in Limay, Yvelines, on October 12, 2019
The suspect "remains in police custody in connection with a European arrest warrant issued by the French authorities," said a spokeswoman for Police Scotland
He is suspected of having his family shot and buried under the terrace of their elegant townhouse in the western town of Nantes.
Their bodies were found three weeks after the killings. During this time Dupont de Ligonnes is said to have informed his adolescent nursery that he had been transferred to a position in Australia.
He allegedly told friends that he was a US intelligence agent included in a witness protection program.
French prosecutors said he killed all five victims in a "methodological execution" and shot them twice in the head with a silenced weapon at close range.
He is said to have covered it with quicklime and wrapped it in sheets before burying it under concrete.
The previous Friday, officials had tracked down the suspect at Charles de Gaulle Airport in the French capital, but there was not enough time to confiscate him. They alerted the British police, which confirmed that an arrest had been made.
The man "remains in police custody in connection with a European arrest warrant issued by the French authorities," said a spokeswoman for Police Scotland.
In this file, taken on April 22, 2011, French police guarded the Dupont de Ligonnes family home in Nantes, western France after the French authorities issued an international search alert for Xavier Dupont de Ligonnes
Today: the house where Xavier Dupont De Ligonnes is suspected of killing his wife and four children eight years ago
A picture shows Benoit Dupont de Ligonnes, one of the five members of the Dupont de Ligonnes family, in front of their home where they were discovered in April 2011
The French newspaper Liberation reported on the suspicion that Dupont de Ligonnes had undergone a plastic surgery, citing police sources, because his appearance had changed.
For years, France has been concerned with the question of how Dupont de Ligonnes disappeared without a trace, with some suggesting that he killed himself. Hundreds of sightings have only added to the mystery.
In 2015, an AFP journalist was sent a letter and a photo of two of his sons, who were signed with his name and the message "I'm still alive." Experts could not verify the authenticity.
The alleged murderer escaped a police search in the southern French Var region in January last year after witnesses reported seeing a man near a monastery that resembled him.
Hundreds of people will march on April 26, 2011 in the French western town of Nantes, in memory of the five Dupont de Ligonnes
The alleged murderer escaped a police search in the southern French region of Var in January of last year, after witnesses claimed to have seen a similar man near a monastery (photo: Nantes, April 2011).
Europol is the European Union Agency for Law Enforcement Cooperation, which helped in the eight-year hunt for De Ligonnès (image: Police Hunt on De Ligonnès in southern France).
Last night French media reported that De Ligonnès had been arrested after flying from Paris to Glasgow Airport.
"He traveled under a false ID card and had completely changed his appearance," said a source of investigation.
This file, taken on April 23, 2011, shows a police seal on the front door of Dupont de Ligonnes' family home in the western French town of Nantes
"He did not try to resist the arrest, but the information corresponded to the information on a Europol search card. It is now double checked. He is now in the hands of the Scottish police. & # 39;
Europol is the European Union Agency for Law Enforcement Cooperation, which helped with the eight-year hunt for De Ligonnès.
Last year, police raided underground caves and abandoned potassium mines in the Roquebrune-sur-Argens area of southern France, where De Ligonnès was discovered in April 2011 by a surveillance camera.
He had fled Nantes a few days earlier after neighbors reported that they had not seen anything in the family for more than three weeks.
The detectives they visited first found a severed leg under the garden terrace and then uncovered the bodies of the dead.
Originally from Versailles, home to the pre-revolutionary kings and queens of France, De Ligonnès was technically a count who could trace his lineage back generations.
A police seal on the front door of the Dupont de Ligonnes family home in Nantes after the French authorities issued an international search alert
The suspect had been arrested after flying from Paris to Glasgow Airport
In seized emails, he said he considered himself part of a Roman Catholic elite that was superior to the masses.
"I think I have a superiority complex, you could call it that," he wrote. "But it is based on a simple observation: I belong to a group of people who are intelligent, determined, balanced and in good moral and physical shape. Such people are rare compared to the masses. & # 39;
In remembrance of his stern, pious childhood, De Ligonnès added, "All my youth was devoted to religion and faith, under the influence of my grandmother and mother. To such an extent that I did not rebel like other adolescents, neither drugged nor chased girls. & # 39;
De Ligonnès was last seen on April 15, 2011, when he left a budget hotel in Roquebrune-sur-Argens and parked his car there.
He wore a rucksack as he strolled through a parking lot into the surrounding countryside and was picked up by a camera.
Between April and June 2011, a comprehensive search was carried out in the area, which the police resumed on the basis of new information last year, but found nothing.
People plant flowers in front of the Dupont de Ligonnes family home as part of a silent march on April 14, 2012 in the streets of Nantes, western France
The French authorities have searched unsuccessfully for Dupont de Ligonnès ever since the bodies of his wife Agnes and the four children Arthur, Thomas, Anne and Benoit were discovered.
There was a theory that De Ligonnès might have committed suicide in the days after the carnage. In this case, the police searched for remnants of his body.
However, the prosecution had never ruled that De Ligonnès lived harshly or was hidden by members of his extended family, who own country houses in France.
The ancestors of De Ligonnès, of which the 19th-century poet Lamartine belonged, originally lived in the southern French province of Rouergue.
Five months before the killings, De Ligonnès said he had inherited a 22-rifle from his father and started targeting a rifle club in Nantes.
From the evidence found in his house it also emerges that he has bought a silencer and a spade, a two-wheeled vehicle, lime and other equipment with which the bodies could have been buried.
It also turned out that De Ligonnès, who ran a number of Internet companies, had significant financial difficulties.
According to the Scottish police, the arrested's digital fingerprints coincide with those recorded by the French media for De Ligonnès.