MADELEINE McCann may have fallen to the ground after leaving his apartment in Portugal, a new documentary.
The theory was initially considered by some of the people involved in the case before the ominous alternatives, such as abduction, were developed by the police.
Maddie disappeared from her bed on May 3, 2007, while on vacation with her parents and family friends at a resort in Praia da Luz, Portugal.
His parents, Gerry and Kate McCann, had left in bed with his brothers while they ate in the restaurant of the hotel, realizing only around 10 pm that it was no longer there.
The infamous missing child case is the subject of a new eight-part documentary on Netflix entitled The Disappearance of Madeleine McCann.
Barry Sadler, a locally owned developer, told documentary producers: "When you leave the main road and the tourist areas, there are wells everywhere.
"I'm sure the child didn't climb there alone, but you don't know, accidents could happen."
And journalist Jon Clarke recalled the initial fears that perhaps Maddie fell into a pit of nearby workers.
"It was a large trench … which led along the way to this wide and 6 foot deep and there were two or three boys working in the trench.
"Do you think he could be down there, could he have fallen down there? Could he have buried her by accident?"
However, without the discovery of a body, the theory was mostly excluded by the police, who instead turned to first falsely accusing Kate and Gerry of being involved, before focusing on unknown abductors.
FAITH OF ABDUCTION
Researcher and author Anthony Summers told Netflix producers: "Perhaps the most significant sighting of all is that of Carole Tranmer who had gone out to see her aunt who lived in the apartment immediately above the McCanns.
"Carole was looking out the window.
"He said:" Looking down under McCann's apartment I saw someone come out of the apartment on the ground floor closing the gate very carefully and silently.
"It seemed very strange to me. He looked to one side and the other, closed the gate and walked very quickly underneath. This is the afternoon of the day Madeleine disappears."
"What had particularly affected, he said, was" the way the man had closed the little gate down there. "His stealth caught my attention. The man had moved furtively as if he didn't want anyone to know he was going or coming."
Summers added: "This must be significant in every investigation of this case".
Comes when we reported as the president of the Portuguese Association of Missing Children, Patricia de Sousa Cipriano, told Netflix producers: "We have information that our country is used by traffickers to transfer children to other countries.
"They enter the country through the Algarve and then go to Spain, France, Germany, to be exploited.
"They have a very strong structure that allows them to move human beings from one country to another within a few hours, it's scary because it's very simple."
WORDS OF FANTASY OF MADDIE
In 2011, Kate also wrote her story of what happened that evening for a book called "Madeleine: the disappearance of our daughter and the continuous search for her".
In it, Kate reveals to Maddie her haunting words the day before she disappeared.
She wrote about how Maddie asked her, "Why didn't you come when Sean and I cried last night?"
Kate wrote: "Madeleine didn't answer or elaborate, Gerry and I were baffled, could it be that Madeleine and Sean woke up while we were at dinner? If so, it was worrying, of course, but it didn't seem very likely."
Meanwhile, Maddie's parents slammed the new Netflix documentary on her disappearance, saying it "won't help" the search.
The family also believes that the new controversial film could "feed conspiracy theorists," the spokesman said.
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