yes, it sounds very unclear, and I'm try to register to the cave forum to find out better...if the DRSS says they were not certified it is unfrotunately quite a big question mark, I know very well it can be interpreted in different ways.. I am still hoping he WAS indeed certified...
There is a big difference between saying some diver did a big mistake and someone you trusted did a BIG mistake..
meanwhile, I've read more italian news about the incident and they report the same
what it sounds weird to me (or better, what I hope) is that a qualified instructor doesn't dive without certifications: he would know better...