WATCH: Madeleine McCann Search Continues in Portugal

PRAIA DA LUZ, Portugal -- Authorities who are investigating the disappearance of Madeleine McCann continued to look for clues today near the resort town in Portugal where the British girl disappeared seven years ago.

Investigators from Scotland Yard and local police combed the area -- the size of three football fields -- and used dogs to search the terrain, located about 300 yards where she had been staying with her family on vacation.

Madeleine McCann: British Police Identify New Leads in Case of Missing British Girl

Scotland Yard Searches for Local Intruder in Madeleine McCann Case

The McCanns have been desperately searching for their daughter ever since she vanished in 2007, launching several appeals, most recently a TV recreation on Britain's version of "America's Most Wanted," showing the night Maddie -- who was 3 years old at the time -- was snatched from her bed while her parents dined at a restaurant near their vacation apartment.

Portuguese police had originally closed the case in 2008 after authorities had detected that no crime had taken place.

Last year, the prosecutor's office in Lisbon reopened the investigation, saying new leads had emerged during a review.