At about 23.00 the extra teams that had been requested for reinforcement arrived (Officer Rosa with Oscar and Officer Martins with Fusco, both from the search and rescue unit and Officer Fernandes with Rex and Zarus from the tracking team).
After the officers had been updated about facts relating to the disappearance, they tried to reconstruct the route the girl might have taken with the two tracker dogs.
For this purpose the dogs were given a blanket to sniff, provided by the parents, which had been used by Madeleine.
Beginning to follow the track using Rex, from the door of apartment 5 A (the place where the girl had been sleeping) he would always head in the direction of Block 4, leaving block 5 the dog would turn to the left, pass by a metal access door to a path existing between the apartments blocks to the leisure area (restaurant, pool and playground). Immediately another attempt at reconstruction was made using the dog Zarus, who, in general terms, ended up following the same route as Rex and having the same behaviour.