Christian Brueckner is the prime suspect in the case of Madeleine McCann's disappearance.

Madeleine McCann suspect may be released before German investigation ends but under '24/7 surveillance'

Police said: 'A number of items were seized as part of the operation'

Madeleine McCann police seize 'a number of items' after reservoir search in Portugal

Madeleine McCann detectives reportedly have been hunting for a camera with pictures of victims

Madeleine McCann detectives hunting a camera which could contain images of her and two other victims

Material collected in the latest search for Madeleine McCann will be sent for testing in Germany, Portuguese police have said.

‘Clue found’ in Madeleine McCann case during three-day search at Algarve reservoir

Material collected in the latest search for Madeleine McCann will be sent for testing in Germany, Portuguese police have said.

'Material collected' by Madeleine McCann investigators to be sent for testing as reservoir hunt ends

The search has now come to an end after three days.

Madeleine McCann detectives end search of remote Portuguese reservoir after removing a number of bags

Investigators will search a remote reservoir in Portugal on Thursday

'Credible evidence' that Madeleine McCann prime suspect visited reservoir 'days after she vanished'

The hunt for missing tot Madeleine has been redoubled after cops investigating Christian Brueckner found new evidence in a search

Madeleine McCann cops search wooded area with sniffer dogs as reservoir hunt continues

Madeleine McCann childhood pictures

What age would Madeleine McCann be now and what year did she go missing?

Metropolitan police searching grass lands in Portugal alongside a picture of Madeleine McCann showing off her eye mark

What happened to Madeleine McCann? A timeline of events as investigation continues

The Portuguese police are searching for signs of Madeleine's pink Eeyore pajamas after a tip-off

Madeleine McCann's pink pyjamas hunted in Portuguese reservior search as police seen taking bags from scene

Madeleine McCann cops are searching an Algarve reservoir said to have been visited by Cristian Brueckner

Madeleine McCann investigators 'remove several bags' during Portuguese reservoir search

Madeleine McCann cops are searching an Algarve reservoir said to have been visited by Cristian Brueckner

Search for Maddie: Divers trawl remote Portuguese reservoir described by prime suspect as 'little paradise'

Madeleine McCann cops are searching an Algarve reservoir said to have been visited by Cristian Brueckner

Madeleine McCann detectives begin search of remote Portuguese reservoir German suspect Cristian Brueckner visited

Kate and Gerry McCann and daughter Madeleine

'We are never going to give up trying to find her': Madeleine McCann's parents issue birthday statement

Kate and Gerry with twins Sean and Amelie McCann (l) and Madeleine McCann (r)

Madeleine McCann's brother and sister: What has happened to Sean and Amelie since Maddie went missing

Madeleine McCann's sister has spoken publicly about her for the first time

'Never give up': Madeleine McCann's sister speaks publicly for the first time since her disappearance 16 years ago

'Still missing': Madeleine disappeared in Portugal in 2007 and her parents have posted a message on the 16th anniversary of her disappearance

Madeleine McCann’s parents are 'awaiting a breakthrough' as they share poem on anniversary of disappearance