Madeleine McCann Case: Police Investigate Theory Girl Disappeared Trying to Find Parents

Parents of missing girl Madeleine McCann, Kate and Gerry McCann pose with an artist's impression of how their daughter might look now at the age of 9 ahead of a press conference in central London on May 2, 2012, five years after Madeleine's disappearance while on a family holiday in Portugal. AFP/Getty Images

Police investigating the disappearance of Madeleine McCann, the then-3-year-old U.K. girl who went missing in 2007 in Portugal, are looking into a theory that she left her parents’ vacation apartment to find them.

The theory revolves around the girl waking up and wandering out of the vacation home in Praia da Luz, Portugal, according to The Sun. Detectives working with the Metropolitan Police discussed the matter with Portuguese police, the report said.