The German suspect in the Madeleine McCann case allegedly confessed to her abduction on the 10th anniversary of her disappearance in 2017, according to reports.

The Sun newspaper claimed that the man admitted to a friend he had “snatched” the young girl as they drank in a German bar.

The suspect reportedly shared the revelation as the pair watched a TV news report on the case, with him claiming he knew what had happened to Madeleine.

The claims come as police received hundreds of contacts from the public following the launch of a new appeal for information on Madeleine’s disappearance.

DCI Mark Cranwell, who is leading the Metropolitan Police’s Operation Grange investigation into the case, said more than 270 calls and emails had been received by 4pm on Thursday.

It followed British, German and Portuguese authorities launching an appeal for information on Wednesday night relating to the suspect.

German prosecutors have said they believe Madeleine is dead and are investigating the child sex predator on suspicion of her murder.

The suspect is a 43-year-old German national named in media reports as Christian Brueckner and is reportedly serving a seven-year prison sentence for the rape of a 72-year-old American woman in Portugal in 2005.

He is known to have lived on the Algarve coast and his Portuguese mobile phone received a half-hour phone call in Praia da Luz around an hour before Madeleine, three, went missing on May 3 2007.

Scotland Yard said he was believed to have been living in a distinctive early 1980s VW T3 Westfalia camper van at the time and re-registered a 1993 Jaguar XJR6 in someone else’s name the day after her disappearance.

Operation Grange still considers the case a missing person inquiry because there is no “definitive evidence whether Madeleine is alive or dead”.

German newspaper Braunschweiger Zeitung have reported the suspect, who has been partially identified as Christian B by local media due to the country’s strict rules on the naming of criminals, was convicted of rape in Braunschweig District Court in December last year.

Der Spiegel reported he is serving a prison sentence in Kiel, having been initially extradited from Portugal in 2017 and convicted of drug trafficking.

The German magazine said his criminal record contains a total of 17 entries, including child abuse while he was still a teenager

Christian Hoppe, from Germany’s Federal Criminal Police Office (BKA), has said that German police have not ruled out a sexual motive for the alleged crime against Madeleine.

He said that the suspect may have broken into an apartment in the Ocean Club complex, where Madeleine was on holiday with her parents, Kate and Gerry McCann, and her twin siblings Sean and Amelie, before spontaneously kidnapping her.

German prosecutors said the suspect was living in the Algarve between 1995 and 2007, where he funded his lifestyle by committing crimes.

A £20,000 reward is available for information leading to the conviction of the person responsible for Madeleine’s disappearance.

The Met’s investigation was tipped off about the German national, already known to detectives, following a 2017 appeal 10 years after she went missing.

Madeleine disappeared shortly before her fourth birthday, while her parents were eating dinner with friends at a nearby tapas restaurant.

Kate and Gerry McCann, from Rothley, in Leicestershire, have welcomed the appeal, saying: “We will never give up hope of finding Madeleine alive.”