Madonna on Monday downplayed media reports of boos and calls for refunds from the audience of her recent concert at Paris' famed Olympia theatre, saying they were caused by "a few thugs" in the audience.
"Unfortunately at the end of the show - after I left the stage - a few thugs who were not my fans rushed the stage and started throwing plastic bottles pretending to be angry fans," Madonna said on her website.
Tickets for the surprise show held last Thursday - a last-minute addition to Madonna's MDNA tour - had been offered first to members of her fan club and sold out within minutes.
It's not the first time her current tour in France has attracted controversy.
At the 80,000-seat Stade de France on 14 July, she angered France's far right party leader Marine Le Pen by showing a picture of her with a swastika superimposed on her face.
This past Thursday, Madonna made only a glancing reference to Le Pen and her political party's anti-immigration stance, and paid homage to a French past that, Madonna said, "opened its arms to minorities."