Scotland Yard has said “no evidence relating to Madeleine McCann has been identified” after an eight-day search in Portugal.
British police investigating herdisappearance have completed their three searches of land close to where she went missing during a family holidayin Praia da Luz.
But the Yard says “more activity has been agreed”, which is expected to commence shortly.
Further requests are also being compiled and will be submitted to the Portuguese authorities, it added in a statement.
After previously declining to comment, the statement said there was “still a substantial amount of work yet to be completed in the coming weeks and months”.
It went on: “This recent work is part of ensuring that all lines of enquiry are progressed in a systematic manner and covers just the one hypothesis that she was killed and buried locally.
“This is the same as would be done in the UK for a murder or high risk missing person enquiry.”
Scotland Yard described the deployment as the “largest ever undertaken by UK police overseas in a case of this type”.
A total of 60,000 square metres of land had been searched including all utilities, drainage channels and derelict buildings.
Madeleine vanished from a holiday apartment in Praia da Luz in May 2007 while her parents Gerry and Kate were dining with friends nearby.
The couple from Rothley, Leicestershire, said last week: “We are kept updated on the ongoing work in Portugal and are encouraged by the progress.”
Specialist teams have used radar equipment, police sniffer dogs and forensic archaeologists in their quest for new evidence.
Portuguese police sources have said a number of suspects will be questioned in the near future once the operation has concluded.
Scotland Yard has refused to say what intelligence led them to the search areas.
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11 June 2014 | 5:50 pm – Source: orange.co.uk