MODENA, Italy (AP) _ Opera star Luciano Pavarotti's tax evasion trial opened Wednesday in his home city of Modena, but the proceedings were quickly adjourned until September.

The hearing was limited to technicalities and Pavarotti was not in court. Pavarotti's lawyer, Massimo Leone, said the next trial date is Sept. 17.

Italian prosecutors allege that the tenor filed false tax returns from 1989 to 1995. Leone refused to indicate the amount of money involved.

Pavarotti has long claimed that his official residence is the principality of Monte Carlo, a tax haven, rather than Modena.

``We will present a series of documents and witnesses to show that the core of Pavarotti's business is not in Italy, but all over the world, from Britain to the United States,'' said Leone.

Pavarotti, who just celebrated his 40th anniversary in opera, will attend the trial in the future, Leone said.

In a separate administrative battle over the same taxes, Pavarotti last summer agreed to pay the Italian government more than $11.3 million in back taxes and penalties.