Italian print media has conceded records of phone calls in which PM Silvio Berlusconi purportedly boasts that 11 women were lining up outside his room to have sex with him.
The captured talk was with local entrepreneur Giampolo Tarantini, who impeaches claim was running a high-level prostitution ring.
Eight people are blamed with bringing prostitutes for Mr. Berlusconi.
He has not been alleged and says he was uninformed of their activities.
Nevertheless, judges would like to interview him as a spectator over charges that Mr. Tarantini tried to extort money from him in return for quiet over the prostitution charges.
The newly transcripts have provoked latest condemnation of Mr. Berlusconi, who is under pressure for his conducting of the Italian economy as the euro calamity has boosted.
Prosecutors in the southern city of Bari say the eight people alleged providing the women in the hope of acquiring jobs, agreements or supports.
They were blamed on Thursday. Friday's newspapers conceded pictures of some of the women purportedly concerned with the case.
And on Saturday a largest numbers of pages of records of intercepted phone calls were got printed.
In one call dated 1 January 2009, Mr. Berlusconi allegedly informs Mr. Tarantini that 11 women were coming up outside his door but he only "did" eight of them because "you can't do all".
In another, he tells himself as "premier in my extra time".
In the mean time, opposition MPs have identified for an investigation into a proposals in the intercepted calls that government airplane were utilized to fly women to private parties arranged by Mr. Berlusconi.
Mr. Tarantini is by now in under arrest in Naples on account the extortion case, where he is charged to have required payments counting 800,000 Euros (£1m) from Mr. Berlusconi in exchange for lying to the Bari investigators.
In this case, investigator says Mr. Tarantini appointed prostitutes, starlets and other young women to go to parties at Mr. Berlusconi's homes.
Together with Mr. Tarantini, a German actress named Sabina Began - nicknamed "the Queen Bee" - is also facing allegations.
The allegations include utilizing prostitution, paying the girls for their services, and attending them to Mr. Berlusconi's residences in Sardinia and Rome for parties in 2008 and 2009.
Mr. Berlusconi refuses hosting orgies, and says the occasions were dinner parties only.
"They were not anything but friendly get-togethers," Mr. Berlusconi's lawyers, Niccolo Ghedini and Piero Longo, said in an announcement.
Utilizing the services of a prostitute over the age of 18 is permissible in Italy, but Mr. Berlusconi is alleged in yet another case being attempted in Milan with having paid for sex with a then-17-year-old Moroccan nightclub dancer.
