By the way, the scientists eventually got acquitted. Italian link http://www.wired.it/attualita/ambiente/2015/11/23/terremoto-...

According to the prosecutor their fault was reassuring people that nothing bad was going to happen, that is negligence in performing the risk analysis.

I still think they were guilty: they accepted to publicly declare that everything was OK and that people could safely return to their homes. Had they refused to do so, some of those people could be alive today.