US pop star Madonna was due in the French city of Marseille on Sunday to meet technicians injured when part of her concert stage collapsed, killing two workers, officials said.
Two men, a 23-year-old Briton and a 53-year-old French colleague, were killed on Thursday when a crane toppled over while they were setting up a stage in Marseille's Stade Velodrome stadium for a Madonna concert.
Eight more workers were injured in the accident, and three of these were still in hospital on Sunday, including an American in serious condition, according to local health officials.
Tour promoter Live Nation, which is overseeing Madonna's world tour, could not immediately confirm the information from French officials connected to the accident inquiry that the star would be in Marseille.
The Marseille concert, which had been planned for Sunday night, has been cancelled. Madonna's next tour date is a sell-out gig in Barcelona's Olympic Stadium on Tuesday, according to her website.
French prosecutors have opened an investigation into the incident which could lead to manslaughter charges. A judicial official said they were looking in particular at a possible error in how the stage roof was raised.
A stage technician, speaking on condition of anonymity, told AFP that the roof would normally have been hauled into place by four motors, but that one of these had been replaced on Thursday by the crane that collapsed.