Composer Lucia Hwong has lodged a legal complaint against her former nanny, who allegedly stole expensive jewellery from the star's New York City apartment.

The instrumentalist returned home from a vacation last month (Apr13) to discover a number of his precious gems had gone missing, so she confronted her live-in helper, Raquel Santos, who reportedly burst into tears and handed over slips to a pawn shop, where some of the items, such as a diamond and ruby necklace, were on display.

Hwong then filed papers with the Manhattan District Attorney's office and called the police, who arrested Santos at the performer's Park Avenue pad.

Santos' lawyer tells the New York Post, "The Da and I are endeavouring to resolve this matter. We expect the victim will not have lost any of her property."