Paulo Pereira Cristovao, a long-time critic of Kate and Gerry McCann who angered them with a controversial book about the mystery, is behind bars at a jail 140 miles north of the Algarve.
Detectives investigating the disappearance of Madeleine McCann locked down a remote Algarve reservoir with a no-fly zone overhead today as they prepared to search for signs of the missing girl.
Brueckner, a convicted paedophile and rapist, had his jaw reset and four rabbit teeth straightened during a procedure at a private dental clinic in his native Germany, according to a TV investigation.