Italian police arrested two siblings on Tuesday for hacking the emails of European Central Bank President Mario Draghi, former Prime Minister Matteo Renzi and thousands of others.

The Rome court ordered the detention of Giulio Occhionero, 45, and his sister Francesca Maria Occhionero, 48, for stealing state secrets and illegal hacking. Lawyers representing the two could not be immediately reached.

"There were tens of thousands of email accounts hacked, and among them were accounts belonging to bankers, businessmen and even several cardinals in the Vatican," said Roberto di Legami, head of the specialized police cyberunit that conducted the investigation.