Autopsy Show Jackass Star Ryan Dunn Suffered A Violent Death

06/22/2011
. (TMZ) "Jackass" star Ryan Dunn and his passenger each died as result of both blunt force trauma AND the fire that consumed Dunn's Porsche during the crash Monday morning ... this according to the Chester County Coroner.

The Coroner's Office just released the autopsy results for both men -- who, we're told, were each dead by the time officials arrived at the scene.

Based on the autopsy results, the crash was so violent, it seems it was impossible to determine if the two died from the impact of the crash itself or from the fire that resulted.

Officials say the toxicology results for both men -- which would help determine the role alcohol played in the crash -- will be released in 4 to 6 weeks.

TMZ previously reported, officials believe Dunn's car veered off the highway and crashed in a wooded area Monday morning ... before exploding in flames. Investigators believe speed may have been a factor in the crash. more on this story

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