In 2013, Mr Berlusconi was convicted of sex with an underage prostitute in what became known as the "bunga bunga" case.

He was cleared in 2015, after an appeal, but prosecutors claim witnesses were bought off.

Mr Berlusconi, 80, denies the charges. His trial starts on 5 April.

The four-time prime minister remains the leader of the centre-right Forza Italia (Go Italy!) party.

The new charges stem from the previous case, when he was accused of having sex with Karima El Mahroug in 2010, when she was 17.

The Moroccan nightclub dancer became better known by her stage name, Ruby the Heartstealer, in the press.

The new trial will focus on the accusation that the billionaire businessman paid more than 10m euros (£8.5m; $10.7m), between 2011 and 2015, to get witnesses to testify in his favour.

Over half of that money is alleged to have been spent on Ms El Mahroug.

He is said to have brought gifts and cars, and paid for housing, bills and medical expenses, for guests visiting his Milan mansion, where he held his "bunga-bunga" parties.

His lawyer, Federico Cecconi, has quipped that he must be on trial for generosity.

In Italy, the age of consent is 14, but paying for sex with a woman under 18 is seen as involvement in underage prostitution.

Before Mr Berlusconi`s sentence was overturned, he was handed a seven-year jail term and banned from holding public office ever again.

However, he was allowed to remain free pending the outcome of the appeal.

His connection to Ms El Mahroug was revealed after, in October 2010, it emerged that he had called a police station asking for her release.

She was being held for theft.

Mr Berlusconi has been embroiled in several high-profile legal battles.

In 2013, he was also convicted of tax fraud, and ejected from the Italian Senate.

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