After 30 years, Italy arrests mafia boss Messina Denaro at Sicilian hospital- Summary- Cosa Nostra boss captured after 30 years- Detained at private hospital in Palermo- Convicted for his part in killing anti-mafia prosecutorsPALERMO, Italy, Jan 16 (Reuters) - Italy's most wanted mafia boss, Matteo Messina Denaro, was arrested by armed police at a private hospital in Sicily on Monday, where the man who has been on the run since 1993 was being treated for cancer.Nicknamed "Diabolik" and "'U Siccu" (The Skinny One), Messina Denaro had been sentenced in absentia to a life term for his role in the 1992 murders of anti-mafia prosecutors Giovanni Falcone and Paolo Borsellino, crimes that shocked the nation and sparked a crackdown on Cosa Nostra.Messina Denaro, 60, was led away from Palermo's "La Maddalena" hospital by two uniformed carabinieri police and bundled into a waiting black minivan.Images on social media showed locals applauding and shaking hands with police in balaclavas as the minivan carrying Messina Denaro was driven away from the suburban hospital to a secret location.Before he went into hiding, he was known for driving expensive cars and his taste for wearing finely tailored suits and Rolex watches."