Maybe they had no power to do so? Did you ever think of that? Point is crime scene was trashed long before police got there.
What do you mean, had no power? You mean no legal power or no physical power?
And the fact that the crime scene was trashed is only half of the story. If it made no difference to the collection of forensics that it had already been left open, the criminologist from the PJ would not have bothered giving an order to have it sealed off:
After the arrival of the witness and his colleague Vitor Martins the scene was isolated and the inspection began, namely the collection of statements and inspection of the scene, the respective reports that were subsequently attached to the process documents.
The witness carried out finger print testing on the inside of the bedroom window, where the girl had been sleeping, leaving other examinations for the following day given that on that occasion these tests could not be carried out in the best technical conditions. For this reason, the apartments and the surrounding area were sealed off, watched over by the GNR officers who remained on site.
As far as he knows, after the first examination, other members from the finger print detection service and also officers from the LPC Crime Scene arrived at the scene.Furthermore, more forensic officers would not have been summoned to the scene if there was nothing of forensic value there. Rather, more members of the finger print detective service and other forensic experts arrived.