Tony Stewart involved in fatal collision with other driver

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Sprint car driver Kevin Ward Jr. is dead following a collision with fellow driver Tony Stewart during a race in upstate New York.

Ward and Stewart collided during the race. Video from the course shows Ward then left his vehicle and was struck by Stewart's car.

"He marches down the track, pointing at Stewart's car. As they approached the caution lap, that's when Stewart's car actually clips Ward, who was run over and thrown a few yards down the track." (Video via WCNC)

"According to Ontario County, New York, Sheriff Phil Novero, the driver was then taken to the hospital, where he was pronounced dead." (Video via CNN)

Social media and some news sites were quickly flooded with posts speculating that the collision was intentional, but analysts are calling on the public to avoid drawing conclusions just yet.  A headline on NBC's sports blog urges, "Let the experts do their jobs."

And commentators point out that until authorities can investigate, most of what we know comes from a single video.

Local authorities told USA Today, "Stewart ... was 'fully cooperative' and that the incident is not being investigated as a criminal matter."