Italian Prime Minister Silvio Berlusconi is due to leave hospital later today after spending his fourth night under observation.

The 73-year-old is believed to have suffered a fractured his nose and two broken teeth after being struck by a souvenir model cathedral while greeting supporters in Milan on Sunday night.

Doctors claim the Italian Prime Minister Berlusconi  is still in pain and struggling to eat properly.

He is expected to be discharged this afternoon but has been urged to scale down public appearances for at least the next two weeks.

A 42-year-old man with a history of mental illness has been arrested in connection with the assault on Mr Berlusconi.

On Wednesday another man was arrested outside the hospital room where the Italian PM is receiving treatment.