Nascar race ace Tony Stewart has been cleared of any criminal charges relating to the death of rival Kevin Ward, Jr., who was struck and killed during a sprint car rally last month (Aug14).

The three-time Sprint Cup Series champion was left shocked and saddened after colliding with 20-year-old Ward, Jr., who had walked into the path of oncoming cars shortly after his own vehicle had spun off the track at the Canandaigua Motorsports Park in Ontario County, New York on 9 August (14).

Authorities launched an investigation into the incident, but officials have since decided not to pursue criminal charges against Stewart as they believe Ward, Jr.'s death was the result of a freak accident, reports Tmz.com.