I joined the "McCann Circus" at the end of 2013 and sceptics were still vehemently defending their position that the the shutter could not be raised from outside.
But I see you have picked up on the point I was making ... EVERYONE ... familiar with them knows they do; I think the problem is why the denial of that fact and the vigour used to do so.
I think like most of the myths ... all unravel under scrutiny.
THIS PROBABLY SHOULD BE ON THE WINDOW THREAD. These things 'appen Mr Rudd.
Lets be clear what we are talking about here:
1. The shutters are
not designed to be opened from outside.
2. They are not a security device unless fitted with lockable hasp and staple. Otherwise a control of light and airflow.
3. From observation of the photographs the shutter on the bedroom of apartment 5A lowered until it sat on the window ledge.
4. Such shutters may be raised from the outside
by as much as the combined backlash on the slats will allow.This amount will vary shutter to shutter due to manufacturimg tolerances. Without sight of the "comics" the variation is a guess. Once all the backlash is taken out the shutter may possibly be forced upward
further into the over head retaining box; this again will vary shutter to shutter. What will
not happen is that the overhead shaft which stores the slats in a rolled up position will rotate backwards when the shutter is raised from outside. So unless the slats are wedged into the track or supported with a mecahnical device they will all come tumbling down with a clatter as soon as purchase on them is released.
5. The window is fitted with a device which allows the window three attitudes: open; closed; closed and locked.
Open = open but that may not be enough to clear the return seal allowing a ne'er do well to stick his fingers in; closed = closed with the locking pin engaged then operable only from the inside; locked = closed with the pin engaged the whole then locked by a key. All of this haraz about the window is evidenced by the plethora of photos kicking about, the best one being on the files with the sliding element with the handle on it removed and leaning against the wall.
If you have been following you will realise how many aspects need to be convergent. So we has us a conspiracy theory ma'am not the lone nutter theory...

Rough comics:
http://www.chinaseniorsupplier.com/Construction_Real_Estate/Door_Window_Accessories/60028655160/C_type_Nigeria_aluminum_window_and_door_building_handle_lock_keys.htmlhttps://www.google.co.uk/search?q=shutter+components&tbm=isch&imgil=2_pzyHhcO03qIM%253A%253BrmWU-ZdWsX4dtM%253Bhttps%25253A%25252F%25252Fwww.alibaba.com%25252Fproduct-detail%25252FRoller-Shutter-components-Scrap-Metal_2013865375.html&source=iu&pf=m&fir=2_pzyHhcO03qIM%253A%252CrmWU-ZdWsX4dtM%252C_&usg=__K5M8790RHO-AnnmM4T1equDolp8%3D&biw=1025&bih=493&ved=0ahUKEwiusMj54dbTAhWLLMAKHU-zCBgQyjcIPA&ei=FWULWe7ROYvZgAbP5qLAAQ#imgrc=2_pzyHhcO03qIM:
p.s how did the alleged burgulah lift the shutter clear of the window sill ? was it clear enough for him to insinuate his fingers? say about a 10mm gap? was he able to produce a "friction drive" using the flat of his hand? or did he have a Swiss Army knife or a jemmy even with which to prise the shutter off the sill ?
https://www.youtube.com/watch?v=GEstgTAXyecp.p.s. I don't care what other people said about not being able to open the shutters from outside. What they said is irrelevant to my argument.
But then being a techno cum legal wallah I would want to know the definition of "open" upon which they relied.
Good innit?