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Police Release Sketch in Madeleine McCann Case

Police want to question a man in connection to the 2007 disappearance of a little girl.
5:04 | 10/14/13

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Transcript for Police Release Sketch in Madeleine McCann Case
The stunning new developments in the mad line McCANN INVESTIGATION. New digital images are released. Lama hasan is in the portuguese village where maddy was last seen. Reporter: We're standing in front of the vacation that maddy went missing from six years ago. This morning, a big development in the case. Brand-new images released of a person of interest. It's making headline pages this morning. This morning, dramatic new details in the search for little madeleine McCann. Scotland yard released never-before-seen computer-generated images of a man people say they saw the night maddy disappeared. He's described as being white, age 20 to 40 years old, short brown hair, medium build, medium height and clean shaven. He was seen around the resort. Identifying him is one of the main priorities for the investigation. Maddy's parents, kate and gerry, are launches a new appeal on britain's version of "america's most wanted" tonight. They'll include this scene, showing arkters playing her parents preparing to leave for dinner at a restaurant 100 yards away. Leaving maddy, her twin brother and sister alone. We're not the ones that have done something wrong here. It's the person that went into the apartment and took a little girl away from her family. Reporter: What happened in the dinner is a crucial time frame. We know that at 8:30, mr. And MRS. McCANN WENT FOR THEIR Dinner. At around 10:00 p.M., That was WHEN MRS. McCANN FOUND THAT Madeleine was missing. Reporter: One theory is that she was taken from this window. The parents left it closed. When kate came back to check on the kid, they found the window and the stutter open. Some of the locals are not interested in what they say is a never-ending case. They've issued a new image of the person of interest in the madeleine McCann case. Have you been following it here? You live here. Yeah, but I've not been following it. Reporter: The new lines of inquiry give her parents new hope. It's a special occasion. Madeleine is not there. That's when it hits home. Reporter: This portuguese vacation resort is very popular. They're taking the call to other countries this week as well. Brad garrett has been following the case. He's with us this morning. The new digital images being released. What do you make of that? I think they're potentially crucial. A number of individuals said they saw a person carrying a child away from the resort. They have never identified a individual. You tighten up the time line, other people might come forward and say, I saw that. Thank you leads is the short answer. You can jog someone's memory after all this time. Also the release of the reenactment. It will be played tonight in britain. That is fascinating and so powerful. Don't you think? It draws us back into the case. The key is new leads. As people watch this and go, you know, I've got a neighbor, he kind of looks like this guy that they're looking for. This is such an intriguing story. And, you know, the heart strings of a missing little girl pull so many people. A lot of leads out there that the people just don't have yet. You talk about heart strings. There's releasing home video of the family playing tennis. Maddy is a little ball girl. It's to remind us, isn't it? That's the emotional hook. It humanizes this girl with her parents. That touches people like maybe a relative of the bad guy, maybe an ex-wife. Somebody that would come forward. There are people that are going the spend so much -- so much time has passed. What really can cap? Who with come forward? Time doesn't matter. I have worked a number of cold cases. 20 years later. It's going back and consistently talking to the public. It will come back to them. I think this may work. The women in cleveland, jaycee dugard, elizabeth smart. You can understand why the parents are holding on and not giving up hope. Exactly. Thank you, brad. We turn on the dramatic

This transcript has been automatically generated and may not be 100% accurate.

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