The 'Girl Gone Wild' singer launched her world tour in May with a concert in Tel Aviv, Israel. She has since visited cities in Italy, France, Germany and Turkey.
WENN reports that a tour vehicle flipped onto its side earlier today (July 3) while headed to Goteborg, where Madonna is set to perform tomorrow night.
There has reportedly been one injury in the accident, which brought traffic to a standstill by blocking several highway lanes.
It is unknown whether or not Madonna was travelling with the group of tour vehicles to Goteborg.
Some controversy has been sparked by the tour, stemming from instances of the 53-year-old performer flashing her backside and breast during a series of performances.
Watch the video for Madonna's 'Give Me All Your Luvin'' below: