Jackass 3D star Ryan Dunn passed away earlier this morning, just weeks after his 34th birthday.

Ryan Dunn and an unidentified passenger were killed after a car crash at approxmiately 3 A.M. in West Goshen Township, Pennsylvania. It isn't known if Ryan Dunn or the unknown casualty were driving the car at the time of the crash.

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Just hours before the crash, Ryan Dunn posted a photo on his Twitter account, which showed him drinking alcohol with two friends.

Ryan Dunn first starred in the MTV series Jackass, along with the trilogy of highly-successful features: Jackass: The Movie, Jackass Number Two, and last year's Jackass 3D.

Ryan Dunn recently appeared on the NBC reality series Minute to Win It on June 8, which turned out to be his last TV appearance. You can watch a clip of his final appearance below, where he cheers on Steve-O.