Health officials said Madonna was to visit two hospitals in Marseilles Sunday to speak with three of the people hurt when a stage collapsed at the city's Stade Velodrom stadium where she was to have performed this weekend, Sky News reported.
The officials said one of the injured is a U.S. national in serious condition.
Madonna arrived in Marseilles Sunday and immediately went to meet with the family of 52-year-old technician Charles Criscenzo, who was killed in Thursday's incident along with 23-year-old worker Charles Prow.
People.com said the "Like a Virgin" singer's Sunday show in the stadium was canceled because of the stage collapse, which left at least eight workers injured, People.com reported.
"My prayers go out to those who were injured and their families along with my deepest sympathy to all those affected by this heartbreaking news," Madonna said in a statement.