They thanked Portuguese and British police for their co-operation and added that they expect their investigation of the 46-year-old suspect in the case will continue for a long time.
In mid-2020, German officials said the German citizen, identified by media as Christian Brueckner, was a suspect in the case. Brueckner has denied any involvement.
Brueckner is currently serving a seven-year prison sentence in Germany for raping a 72-year-old woman in Portugal in 2005.
He is under investigation on suspicion of murder in the McCann case but hasn’t been charged. He spent many years in Portugal, including in Praia da Luz, around the time of Madeleine’s disappearance.
The case of Madeleine McCann stirred worldwide interest for several years, with reports of sightings of her stretching as far away as Australia, along with a slew of books and television documentaries about the case.
British, Portuguese and German investigators are still piecing together what happened on the night when the little girl disappeared from her bed in the southern Portuguese resort on May 3, 2007. She was in the same room as her brother and sister — 2-year-old twins — while her parents had dinner with friends at a nearby restaurant.