Their conclusion is that the most likely source of the missile was an Islamic Jihad missile battery position located in a nearby cemetery. The main smoking gun they were looking for - or not looking for - was the impact crater, which was tiny. Israeli JDAMS-guided munitions dropped from F-35s and F-16s tend to be 500lbs of explosive at the lower end, which leaves a crater metres across and deep, and would have reduced the entire hospital building to fragments altogether. In the drone and news footage, none of the surrounding buildings are structurally damaged (windows are shattered, some external structuring is blown off, but the main buildings are standing). The fire damage would be consistent with a largely still-fully-fuelled, smaller missile exploding shortly above ground (with Israeli missiles going for ground penetration in the hope of collapsing nearby Hamas tunnels, that would be extremely counterproductive in this case). They also concluded, based on earlier footage, that around 50 people were sleeping in the parking space, but potentially more were milling around for medical attention, which would at least explain the possibly high number of casualties (the suggestion that there were 1,000 people there seems to be wildly exaggerated, there isn't enough space in the car park for a thousand people plus the tents which were present and all the cars that were burned out).
It is possible, if unlikely, that Israeli used a much smaller type of missile than they'd normally deploy for some specific targeting purpose, but it's unclear why or what that would be. The suggestion they tried to fake it looking like an IJ missile to cause casualties feels like a stretch, given they would know that they'd be blamed for it regardless of how much evidence suggested otherwise.
Another possibility is that an Israeli missile exploded above ground or nearby, and it was a missile fragment which hit the lot and exploded, or possibly detonated some fuel storage on the ground, but if so they have not found any evidence of that, or of the main explosion from the main target.
All of this is highly suggestive rather than utterly conclusive, of course.
ETA: The BBC has a good breakdown, and in fact an Al-Jazeera video feed which pretty much shows a rocket going up, misfiring and coming straight down again on the hospital.
This post has been edited by Werthead: 18 October 2023 - 08:21 PM