(CNN) Sophia Floersch is undergoing surgery for the spinal fracture she suffered in a horrifying airborne crash at Sunday's Formula Three Macau Grand Prix.

The 17-year-old German lost control of her Van Amersfoort Racing car and flew through the air, slamming into the track fence where marshals and photographers were gathered.

"The medical team is working slowly on purpose, to avoid risk," said a tweet sent from Floersch's account on Monday.

"The course of the operation so far is good and without complications. The operation which started this morning is ongoing."

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