Tony Stewart hit and killed driver Kevin Ward Jr., who walked toward Stewart's sprint car last night(Saturday) after the two had an altercation at Canandaigua (N.Y.) Motorsports Park, according to authorities, witnesses and a video. 

The Ontario County (N.Y.) Sheriff’s Office did not name the victim however confirmed in a news release that the victim, was declared dead about 45 minutes after the accident upon arrival at the Hospital.

"Mr. Stewart has cooperated with the investigation, which is ongoing," the release stated.

*SportingNews.Com is reporting that Stewart is planning to race at Watkins Glen

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There are videos on YouTube of the incident that we aren't including here.

*UPDATE!! Nascar.com is reporting that Tony WILL NOT Race at Watkins Glenn.