Christian Brückner is due to be released from prison in Germany on a separate offence this week.

British police investigating the disappearance of Madeleine McCann, a three-year-old British girl who vanished in Portugal in 2007, said a 49-year-old German man remained a suspect but had refused to be interviewed.

Christian Brueckner, 49, has previously denied any involvement in the 2007 disappearance of British toddler Madeleine McCann.