German Police are reportedly searching a remote Portuguese reservoir for Madeleine McCann that was frequently visited by suspect Christian Brueckner.
The hunt will be undertaken by the European police force as they try to find the toddler who disappeared from her mum and dad’s holiday apartment in Praia da Luz in May 2007.
Her parents Kate and Gerry McCann, from Rothley, Leicestershire, have continued to hope their daughter is still alive and that they will be reunited as a family again, the Mirror reports.
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Officers have been seen shutting off roads leading to the man-made dam close to the town of Silves before they begin their official search tomorrow (Tuesday May 23).
Bystanders noticed several local council lorries as well as tents and other structure on the piece of land by the reservoir.
Behind them in another area just under a mile away Portuguese Civil Protection workers were seen setting up a large blue tent alongside police who had mounted their own blue tent.
An onlooker said: "There are around two dozen Policia Judiciaria officers who seem to be supervising things at this stage."
Scotland Yard detectives are understood to have travelled to the area but only with a "watching brief".
There was no obvious sign of any German police today although they are due in the area later. Portuguese officials have not yet made any official comment.
It was not immediately clear what had prompted this week’s operation, and whether it was hastily-arranged after police in Germany received a new tip-off or had been organised over time as prosecutors there continue to try to build up a picture of sole suspect Christian Brueckner's life on the Algarve and the places he frequented.
The search is set to last for at least two days and beyond that if anything of relevance is found.
It will be the first major operation of its kind since June 2014 when British police were given permission to do digs in Praia da Luz that involved sniffer dogs trained in detecting bodies and ground-penetrating radar.
This time round, expert divers are set to explore the murky depths of the dam but digs will also take place in woodland by the water.
The area which will be searched is the Barragem do Arade reservoir near Silves where a lorry driver says he saw a woman handing a child-like Madeleine McCann over to a man two days after she went missing from her Praia da Luz holiday apartment on May 3, 2007.
It was searched twice in February and March 2008 by divers hired by a Portuguese lawyer.
Marcos Aragao Correia organised the privately-funded operation after claiming he had been tipped off by underworld contacts that Madeleine had been murdered and her body thrown into the reservoir within 48 hours of her disappearance.
Two bags containing small bones were found during the second search after divers had earlier recovered several lengths of cord, some plastic tape and a single white cotton sock.
Portuguese police were alerted following the discovery but subsequently ruled out the possibility the bones were human because of their size.
Madeleine's parents Gerry and Kate McCann had previously dismissed Mr Correia as a self-publicist and said there was no evidence suggesting any link between their daughter and the reservoir.
It is not thought to have been searched since March 2008 as part of the ongoing investigation into her disappearance.
One well-placed source described it as a German-led operation which was being coordinated with the help of Portuguese police and was linked to the information the authorities had gleaned pointing to regular trips Brueckner had made to the dam.
The insider said: "Portuguese police will offer logistical support but the initiative is German and they were the ones that requested the work that is going to take place this week.
"Scotland Yard officers are due to travel to Portugal but theirs will be a watching brief."
Earlier this month Kate and Gerry posted a poignant tribute to mark their daughter's 20th birthday, telling her: "We love you and we're waiting for you. We're never going to give up."
They added: "Happy Birthday Madeleine. Still missing. Still very much missed. Still looking. For as long as it takes."
The message on the official Find Maddie Campaign Facebook page accompanied a cherished last photo of her as a three-year-old, beaming in a pink sunhat and clutching tennis balls.
Kate and Gerry are expected to be kept informed of any developments as a result of the new search through Scotland Yard liaison officers.
German prosecutor Hans Christian Wolters has consistently said he is convinced Madeleine is dead and caged paedophile Brueckner, 45, has been named as the sole suspect.
The deviant, currently serving time for the September 2005 rape of an American OPA in the resort where Madeleine vanished, has yet to face any formal accusation over the youngster's disappearance.
Last April he was made an official suspect or arguido in Portugal over Madeleine's disappearance, although his defence lawyer Friedrich Fulscher labelled it a “procedural trick” linked to statute of limitations legislation at the time.
Last autumn Brueckner was charged in Germany with several sex crimes on the Algarve against women and children including the rape of an Irish holiday rep in 2004 and the sexual abuse of a 10-year-old girl on a beach near Praia da Luz in 2007.
Brueckner's lawyer revealed in April those charges had been dropped against him in a bombshell development after successfully arguing prosecutors had no jurisdiction over him in Braunschweig where the Madeleine case was being brought.
The case could end up with prosecutors in Saxony-Anhalt instead but an appeal lodged by the Braunschweig public prosecutor's office has yet to be decided.
Braunschweig prosecutor Mr Wolters has insisted they are still in control of the Madeleine McCann investigation and Bruecker, who denies any involvement in Madeleine’s disappearance, remains in custody.
In July 2020 Portuguese police and firefighters searched three wells for Madeleine's body but failed to find any trace of her.
The abandoned wells are a 15-minute drive from a cottage Brueckner rented on the outskirts of Praia de Luz, on a narrow road leading down to a beach where the paedophile used to park his VW camper van.
The Scotland Yard digs nearly nine years ago in Praia da Luz were linked to the leading UK police theory at the time Madeleine died during a break-in and burglars dumped her body nearby.
The searches failed to find any trace of the missing youngster.
Respected Portuguese broadcaster SIC is reporting German police sought permission to search the dam in an official judicial request to Portugal after concluding it was an "area of interest".
It said: "Investigators know suspect Cristian Brueckner used to come to this dam regularly.
"He would call it his little paradise and would often spend the night here. He was seen here often.
"The German authorities considered this reservoir to be an area of interest and ended up sending an International letter of request or letter rogatory."
Today is being described as a preparation day in which the logistics to enable the search proper to start tomorrow are being put in place.
The Portuguese Policia Judiciaria is coordinating the work that is being done.
It was not immediately clear when the German search request was made but it is thought to have been sent to Portugal several weeks ago.
Although divers are expected to participate in an underwater search, local reports are claiming around "80 per cent" of the searches will be land searches and the rest underwater ones.
The search area is around 30 miles from Praia da Luz where Madeleine went missing.
Brueckner also spent time living in and around the hamlet of Foral around 12 miles from the reservoir.
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