Witnesses say NASCAR star Tony Stewart struck another driver at a New York dirt track Saturday, a year after he was involved in another crash that left a young woman dead.

Authorities say they are investigating the crash at Canandaigua Motorsports Park but gave no details early Sunday. A spokeswoman for Thompson Health said the hospital was treating one patient involved in the crash at Canandaigua Motorsports Park, but would not identify the patient or give a condition or injury details.

Michael Messerly, a fan who witnessed the crash, said it appeared Stewart -- racing there on the eve of a race at Watkins Glen -- hit a driver who was walking on the dimly lit track after they had collided on the previous lap.


Per Sheriff Povero, Kevin Ward, age 20 years old, has died from his injuries sustained from the incident with Tony Stewart.


This is a very graphic video.  Click here to watch the incident. ***WARNING***This is a very graphic video.