Computer-generated police images of man sought for questioning in disappearance of Madeleine McCann
10/14/2013 AT 08:30 AM EDT
Six years later, the hunt continues.
British police have released two photofits of the man sought for questioning about the disappearance of the nearly 4-year-old Madeleine McCann
, who was snatched from her hotel room in the Portuguese town of Praia da Luz on May 3, 2007.
The computer-generated pictures are based on descriptions provided by new witnesses who claim to have seen the man on the night of Madeleine's disappearance.
Metropolitan Police describe him as white, between 20-40 years old, with short brown hair, of medium build, medium height and clean shaven.
On Monday, investigators in the case plan to make another appeal to the public on the BBC program Crimewatch
, which is set to air in the U.K., the Netherlands and Germany.
In a statement Monday, Detective Chief Inspector Andy Redwood said: "Today I am asking the public for their help. Whilst this man may or may not be the key to unlocking this investigation, tracing and speaking to him is of vital importance to us.
He added, "We have witnesses placing him in the resort area around the time of Madeleine's disappearance."
He also promised that the force will seek out more people who may be able to help investigators.
"This is far from our only line of inquiry and there will be e-fits released of other sightings as well, who we are equally keen to trace."
On the Crimewatch
program, Madeleine's parents, Kate and Gerry McCann, underscore their continuing anguish, with Kate McCann saying, "We're not the ones that have done something wrong here. It's the person who's gone into that apartment and taken a little girl away from her family."
Since Scotland Yard took over the investigation, they have said that there may be around 40 people of interest
whom they want to trace.
On Sunday, Redwood said Scotland Yard's investigation has "significantly changed the timeline" and accepted version of events of that night.
He did not elaborate on what has changed, but said he hopes when the public sees the new reconstruction more information will come in that will move the investigation forward.
Those with any information are being asked to call the incident room at 0800-096-1011 (in the U.K.), or 4420-7158-0126 (outside the U.K.). You may also email firstname.lastname@example.org