Berlusconi was said to have had ties to organized crime, going back to his time as a real estate lawyer. https://www.theguardian.com/world/2009/dec/04/silvio-berlusc...
As a staunch Italian hater of anything Berlusconi, we still have to agree that he was never found guilty of those charges, though--it doesn't mean he was involved, but the judiciary system in Italy had also its own agenda and an obsession with indicting Berlusconi that, tbh, backfired against the court system in a big way.
most of them ended because the limitation period expired, thanks to his lawyers being elected in Parliament to fix his trials.