On Friday, Portugal Police named Madeleine McCann's mother Kate a suspect in her daughter's disappearance.
4-year-old Madeleine has been missing since May. The disappearance Madeleine sparked a global search and a media effort by the parents that included a meeting with Pope Benedict.
An unidentified family spokeswoman says the parents are being questioned after the girl's blood was found in a vehicle the family rented 25 days after reporting her disappearance.
Meanwhile, the parents maintain their innocence.
A family spokeswoman tells BBC TV that allegations Kate McCann might have been involved in her daughter's death are "completely ludicrous."