Detectives investigating the disappearance of Madeleine McCann reportedly spent two hours quizzing a convicted child rapist in his prison cell.
Anthony Woodhouse is being held at Channings Wood jail in Devon, where he is serving a 17-and-a-half year jail term.
The 68-year-old spent more than ten years in hiding in Portugal after raping and impregnating 14-year-old girl in Herefordshire, The Sun reports.
He gave himself up in 2008 claiming he felt “preoccupied with guilt every day.”
A source told the newspaper: “Officers took him into a private room for a good couple of hours.
“They were talking about how he was in ‘close proximity’ to where Madeleine disappeared. For days after he was quizzed, Woodhouse was abused by inmates. Whenever he walked down the corridor they’d chant, ‘Give her back, give her back.’”
Woodhouse was reportedly questioned in March about a cleaning business he was running in the Algarve when Madeleine went missing.
Madeleine, who was then nearly four, disappeared from her family's holiday apartment in Praia da Luz on May 3 2007, as her parents dined at a nearby tapas restaurant with friends.
A spokesman for Scotland Yard told Huffington Post UK it would “not be providing a running commentary” on the investigation.
Monday is Madeleine’s 11th birthday, which parents Kate and Gerry will mark with cake and presents at their home in Rothley, Leicestershire.
Earlier this month on the seventh anniversary of her disappearance, her parents spoke of their grief in their blog.
“A lot of the time there are no words. Our situation seems as unbelievable as it did that very first night without Madeleine.”
But the couple have been quick to stress they are heartened by “the positives, of which there are many.”
Last week it was revealed excavations are due to begin near the site where Madeleine vanished from.
The Metropolitan Police Service continues to offer a reward of up to £20,000 for information leading to the identification, arrest and prosecution of the person(s) responsible for the abduction of Madeleine.