IIRC the first GNR patrol checked the shutters too (I think this is from one of the documentaries not the files, sorry don't have link)
I can find no specific reference that the GNR officers physically checked the shutters; I think it possible that they correctly thought an observation without contact was appropriate; although there is no doubt that they searched the house and the outer areas in an effort to find the missing child.
They have been castigated for being 'careless' in their search of the apartment, opening cupboards etc. and perhaps destroying evidence in the process but imo the Portimao forensic team managed to do that without the assistance of the GNR.
I think the proof that they checked the back area lies in the unfortunate print left on one of the patio doors.
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
When questioned about the windows in the bedroom, he only remembers that the window in the girl's bedroom was closed with the blind raised up the space of the width of a hand. He does not remember the existence of curtains. The father indicated, through the translator, alleging that when the disappearance was discovered, the windows and blinds were open.
José María Batista Roque
Date: 17 – 10 – 2007
When questioned about the bedroom windows, he only remembers that blinds of the window of the girl’s bedroom were not totally closed. He does not remember about the existence of curtains or whether the window itself was closed.
Nelson Filipe Pacheco da Costa
Date/Time: 2007/05/07 18H45
When questioned he replies that he remembers that the blinds of the window of the child’s room were open, but inclined (the lower part, at about a hand’s width). He does not remember if the window was open or what the state of the curtains was.
Antonio Henrique da Conceição Duarte
Date: 2007/05/16