Ryan Dunn — Autopsy Underway

Filed under: Ryan Dunn, RIP

TMZ has learned the Chester County Coroner is currently conducting an autopsy on Ryan Dunn … to determine, among other things, if alcohol played a role in the “Jackass” star’s death.

In addition, we’re told the coroner is performing an autopsy on Ryan’s unidentified passenger — who was also killed in the fatal car crash this morning.

As we previously reported, friends claim Ryan had upwards of six drinks before getting behind the wheel … and driving off a Pennsylvania highway.

So far, no word on when toxicology results will be released.