Police appeal for video of NSW ski crash POLICE are calling for anyone who may have filmed the moments leading up to a tragic waterskiing accident in NSW to come forward. On Sunday morning a 20-year-old champion waterskier, Sarah Teelow, had just started the Bridge to Bridge Water Ski Classic when she came off her ski on the Hawkesbury River. Ms Teelow sustained serious spinal and head injuries and was airlifted to the Royal North Shore Hospital. Her parents rushed to her bedside. A hospital spokesperson corrected early reports on Monday Ms Teelow's life support had been turned off. The spokeswoman confirmed as of 8:30pm (AEST) on Monday, she remained in a critical condition. NSW Police are investigating how Ms Teelow fell off her ski at high speed, including reports she hit wake created by another boat. Kuring-Gai Local Area Command Inspector David Hogg said police were looking at every possibility. "We are making inquiries with the driver of the boat and witnesses to the incident," he told AAP. Insp Hogg urged anyone who may had been filming the race and captured the fall to come forward. A NSW Roads and Maritime Services spokeswoman said RMS was also assisting police with the investigation. Ski Racing Australia stated on Sunday it did not know what caused the accident. Chairman Rick Love said the conditions were good and sea was slight at the time. Ski Racing Australia did not return calls on Monday. Ms Teelow's mother, Tania Teelow is also a champion waterskier, the co-owner of Teelow Pools in Dubbo. According to the University of Technology Sydney website, Ms Teelow, a bachelor of human movement student, is part of an elite athlete scholarship program.