Search: McCann internet video
British police have appealed for internet users worldwide to spread a new video aimed at pricking the conscience of the key witness who knows what happened to Madeleine McCann.
The one-minute film includes fresh images of how Madeleine might look now, including one with dark brown hair and tanned skin in case she has been living in north Africa.
The appeal, launched by the Child Exploitation and Online Protection (Ceop) centre, is targeted at a friend or relative of the person responsible for the little girl's disappearance.
Ceop head Jim Gamble said the clip's message, which has been translated into six other languages, had been crafted with the help of psychologists to persuade the witness to "do the right thing".
He said: "The person we are looking to reach is likely to be a partner, family member, friend or colleague of the person or people who were involved in Madeleine's disappearance. It is also highly probable that they, or someone close to them, is using the internet to search for any updates that may suggest the police are getting closer to discovering the truth."
Madeleine was nearly four when she went missing from her family's holiday apartment in Praia da Luz in Portugal on May 3 2007 while her parents dined with friends nearby.
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Despite a massive police investigation and huge publicity worldwide, she has not been found.
Ceop hopes people will spread the new film - the first appeal of its kind - across the globe using blogs, email and social networking sites such as Facebook and Twitter.
It features a number of well-known photographs and video clips of Madeleine, as well as three pictures of how she could look now, aged six, if she is still alive.
