Brueckner, 45, who has embarked on a letter writing campaign to try to clear his name - was named by Portuguese authorities as an arguido - official suspect - last week.
Christian Brueckner, 44, was officially designated as a suspect, or arguido by Portuguese authorities on Friday, in connection with the three-year-old British girl s disappearance on May 3, 2007.
One of Brueckner s earlier victims, 34-year-old Anastasia Meckesy, today declared the sex offender had confessed to her in 2013 that he knew what happened to Maddie almost 15 years ago.
Brueckner, 44, who has been linked to four other child murders across Europe since 1996, was sensationally named by German prosecutors as the man responsible for Madeleine s kidnap.