The late Italian opera star Luciano Pavarotti carved out 15 million euros (21 million dollars) of his estate in the form of a trust for his second wife, Italian press reports said Tuesday.

The surprise revelation was in a final will drafted on July 29, five weeks before Pavarotti’s death, that was opened on Monday by the three lawyers of the singer’s second wife Nicoletta Mantovani.

A previous will dated June 13 remains valid, distributing the rest of the tenor’s estate among his three daughters from his first marriage, Mantovani and the four-year-old daughter he had with her.

But the new will carries a special clause concerning Pavarotti’s three New York apartments and items such as paintings by Henri Matisse worth a total of some 15 million euros.

This part of the estate was bequeathed exclusively to Mantovani in the form of a trust that Pavarotti set up just a few days before his death, and it is untouchable by the three elder daughters.

Their lawyer Fabrizio Corsini told the daily La Repubblica of their surprise.

“We were going by the previous will dated June 13 that gave my clients the share provided for by law and that named Nicoletta Mantovani as the executor,” he said.

“Now the affair has taken a new turn. We want to verify the date of the trust, and then we will ask for a valuation of the estate.”

“If it appears that there as been a serious prejudice, we will think about the means to secure the rights of the three daughters, but without controversy and not right away,” Corsini added. “My clients are not in a hurry.”

Media estimates of Pavarotti’s fortune range widely, from 30 million to as much as 200 million euros.

Pavarotti died September 6 aged 71 in his hometown of Modena, in northern Italy, after suffering from pancreatic cancer.

He married 37-year-old Mantovani in 2003.