MILAN, Italy - Critics of Italian Premier Silvio Berlusconi have staged a protest near his Milan villa, some wearing masks of the leader while others shouted slogans against him.

Berlusconi is under investigation on suspicion he had sex with a 17-year-old Moroccan girl and used his office to cover it up. He denies wrongdoing.

Prosecutors have focused on Berlusconi's villa in Arcore, just outside Milan, where he reportedly throws wild parties with young women.

During Sunday's protest in Arcore, some wore masks of Berlusconi's grinning face covered by underwear. One woman wore a prosecutor's black robe in a show of support for the judiciary, which Berlusconi has repeatedly attacked.

Some protesters reportedly tried to approach Berlusconi's villa but were stopped by police.