Russian Federation freestyle skier Maria Komissarova has suffered a serious injury today while training on the Sochi Olympic course for the ski-cross event, the Russian freestyle federation has reported.

A press release called the injury "serious" but did not disclose the nature of the injury. It said that after initial tests were performed, doctors decided to have the surgery done in a hospital that was recently built near the skiing venues.

"Maria Komissarova received a serious injury today during training. She was urgently taken to hospital," the federation statement said. "Doctors carried out the necessary examination and took the decision to operate on her on the spot."

Meanwhile, the Russian state-owned R-Sport news agency allegedly quoted a source familiar with the situation as saying that the 23-year-old had sustained a fractured vertebrae.