New evidence about missing British girl Madeleine McCann is set to be released by a Portuguese prosecutor.
Update: Details Of New Madeleine 'Sightings' Due Out
New details about possible sightings of missing British girl Madeleine McCann are being released by a Portuguese prosecutor.
Sky's crime correspondent Martin Brunt said there were "quite a few potential sightings, I'm told".
The new evidence is due out "because four British newspapers have applied to the state prosecutor in the Algarve", he continued.
Brunt said: "(The prosecutor) has in these last few hours released details and information that has been given to Portuguese police since they closed the official investigation."
video with Martin Brunt
Update: Madeleine vanished from her family's holiday apartment in Praia da Luz, Portugal, in May 2007, shortly before her fourth birthday.
Despite a massive police operation and huge publicity worldwide, the young girl has not been found.
Officers in the Algarve shelved a probe into the disappearance in July 2008.
But the girl's parents Kate and Gerry McCann "have recently been complaining that lots of new information has come into Portuguese police since that file was closed but none of it was acted on", Brunt said.
The McCanns' family spokesman Clarence Mitchell said: "Kate and Gerry have made it clear that they were shocked to see the lack of follow-up work done by the Portuguese police since the investigation was shelved.
"All the information in these files must go to the private investigators as they are the only people still looking for Madeleine."
Four months after she disappeared, Portuguese police made both Mr and Mrs McCann "arguidos", or formal suspects, in the case.
Two days later, on September 9, 2007, they returned to Britain with their two other children, twins Sean and Amelie.
Mr and Mrs McCann's arguido status was lifted when the Portuguese attorney general closed the case.
The couple insist they will continue to believe Madeleine is still alive until presented with firm evidence to the contrary and have vowed to keep looking for her for as long as it takes.
in Sky News
related: Isabel Duarte press conference where she states that there's new information about Madeleine McCann
Isabel Duarte: “In our office, we are analysing all of the documents that came from the Algarve, selecting those that seem to be important to us and that which is secondary, or absolutely necessary, so I can meet with my colleagues and with my clients, and all of us make a decision concerning the reopening of the process, which they have manifested, over the last few days, that they want to do, after finding out that there are several elements in the Portimão process that they did not know about.”