It could simply be making the news because of the dramatic footage.

It seems that Sergio played a significant role in Mani Pulite in Italy in the 90-ties, an investigation into the wide spread commingling of organized crime, political parties and businesses.

The fall out of this caused the collapse of the Italian first Republic.

And many parties and officials were caught up in scandal.

It seems that the Italian police keeps open that foul play is involved: i.e. murder.

...he should have stuck with chasing ambulances...

...doggy winks...

All I could find was that he was an expert in family law and patrimonial advice.

Real question is how did he know Hillary and what incriminating evidence did he know of?

I wonder if his fifty year old partner was looking forward to outliving him.