A photo of missing British girl in Portugal, Madeleine McCann, is released, May 12, 2007. (Xinhua Photo/Reuters/file)

       BEIJING, Sept. 11 -- A full DNA match to Madeleine McCann has been found in the hire car used by the family, in addition to the partial match in traces of blood found in the boot of the vehicle, UK media reported Monday.

       Madeleine McCann, a British little girl， went missing during her stay with her parents in Portugal in May.

       While the exact nature of the material remains unclear, it is believed to be either blood or biological fluid from Madeleine. A source linked to the investigation said: "It shows that the parents have a lot of explaining to do."

       The Portuguese prosecutor, who will decide whether to charge Gerry and Kate McCann with killing their daughter, will be handed a mass of police files about the case on Tuesday.

       Samples sent to the Birmingham-based Forensic Science Service have been analyzed and the results sent to the investigating officers.

       It was claimed that the sample could not simply have been transferred from clothing or a cuddly toy. But it remained unclear exactly what material the DNA had been retrieved from. If it was a hair or flakes of skin -- the most easily transferrable form of material that yields DNA -- it would not have a dramatic impact on the investigation.

       However, if it was blood, one of the most easily degradable forms of DNA, or internal fluids associated with a body, it would be a breakthrough.

       Another sample is believed to show an 80 percent match to the genetic profile of Madeleine, who disappeared on May 3, just a few days before her fourth birthday. Both samples were found under upholstery in the boot of the Renault Scenic after police seized the vehicle in August.

       The vehicle had been used to carry all of the child's belongings, including toys and clothing, when the family moved from the Ocean Club where she disappeared to a rented villa on the outskirts of Praia da Luz.

       The two important samples were accompanied with one partial match found on the windowsill of the apartment where the McCanns had initially stayed. Traces of Madeleine's blood were found on the floor of the apartment but another sample found on the wall was thought to have come from a male, but was too degraded to secure an exact match.

       Mrs McCann was said to have said that claims that minute bloodstains in the apartment where Madeleine stayed could have got there if she had a graze or cut or even a nosebleed.

       She dismissed the suggestion that there was the scent of death on some of her clothes and the child's soft toy by saying that any such smell found by sniffer dogs was a result of her job at a local GP where she encountered corpses, it was reported.

       Police are still trying to establish whether the child died after being hit or pushed by a parent. Another theory is that she overdosed on adult medicine which had been left within her reach or that she died from oversedation. They have not ruled out the possibility that someone helped the couple to dispose of the body.

       New searches are due to be carried out on "specific locations" south of the Ocean Club where Madeleine disappeared from her apartment. The police would focus on an area of wasteland and a street where roadworks are being carried out. Officers are also expected to search the villa the couple left.