The teenage Moroccan nightclub dancer whom Italy's Prime Minister Silvio Berlusconi allegedly paid for sex, asked the premier for five million euros in exchange for her silence, according to tapped phone calls.

Karima El Mahroug, now 18, and Berlusconi deny they had sex over several months in 2010 when she was 17. Berlusconi is being formally investigated over the case for allegedly having paid a minor for sex - a criminal offence in Italy.