I'll be curious to see what finally emerges from this investigation.
It would not surprise me if it turned out to be a Mossad caper. Israel is not about to renounce its goal of eliminating Iran, no matter how many real threats it faces in its immediate neighborhood.
On the other hand, it could of course be some group in the Iranian system - like Revolutionary Guards - but I do not believe Iran's leaders would do anything so rocambolesque.
Wonder what other Kos readers think....