Portuguese police delivered case files on missing four-year-old Madeleine McCann to the public prosecutor today, local media said.
Gerry and Kate McCann left for Britain on Sunday after they became suspects in Madeleine's disappearance on May 3rd from a hotel room in an Algarve resort while they were dining nearby. They have denied any involvement.
Relatives have said they would return to Portugal if required by police.
Madeleine McCann - missing since May 3rd
A spokeswoman at the prosecutor's office would not comment on whether the file had arrived. He said the prosecutor would issue a statement on the case later today.
The prosecutor will decide if there is sufficient evidence to impose new conditions on the McCanns or even charge them with involvement in Madeleine's disappearance. He could also decide there is insufficient evidence to do anything and may ask police investigators to find more evidence.
The file includes forensic results of evidence taken from various sites in the Praia da Luz resort where Madeleine vanished and details of police interviews with the McCanns. They were both interviewed for several hours last week.
The forensic evidence may clear up whether Madeleine's DNA was found in a car hired by the McCanns after she disappeared.
Alipio Ribeiro, head of the judicial police investigating the case, said that evidence was not conclusive. "Various analyses were received but none of those tests are that exact, (giving 100 per cent certainty) so in other words we cannot say that blood belongs to A or B," he told RTP television in an interview last night.
With Portugal's slow-moving legal system, where courts and prosecutors are overburdened with cases, the Madeleine case could drag on for many more months, legal experts said.
Kate McCann told a Sunday newspaper detectives pressured her to confess to having accidentally killed her daughter. "They want me to lie. I am being framed," she was quoted as saying in the Sunday Mirror. The couple are at home in the village of Rothley, Leicestershire, with crowds of journalists camped outside.
British social services have held talks with police about the McCann's other children, two-year-old twins Sean and Amelie.