Not only that, but it is still a big question mark what kind of role PA even had in this or if they were bypassed completely. I ask this mainly because the way that Iran criticized Pakistan in the statement makes it seem like Pakistan was being uncooperative or at best unhelpful. The way that they said Pakistan's actions were not enough seemed very strange to me and suggests that Pakistan would not have been in the loop for this specific operation and thus the chances of this being a joint operation are extremely slim. So it would not surprise me if Iran just decided to do it without Pakistan's help, with the obvious caveat that for the IRGC to get on the Pakistani side they would basically have to violate the border somewhere to cross themselves or to escort the hostages in covertly. So doing this during the night does make sense. The fact that this whole operation could unfold undetected is pretty shocking to say the least. PA could have picked up on a lot of warning signs, ie. unusual activity around the fence, suspicious convoys at night, etc, but missed all of it. Stuff like this has pretty big implications and adds up over time. Damning to say the least.
By the time Pakistan got word of this, Foreign Office decided to say they were in on it the entire time, even though its obvious to anyone that this was not the case.