‘Jackass’ Star Ryan Dunn Dies in Car Wreck

34-year-old dies hours after posting photos of himself drinking on Twitter

"Jackass" star Ryan Dunn died in a car wreck in Pennsylvania early Monday, hours after posting photos of himself drinking on Twitter. He was 34.

Dunn's passenger, identified Tuesday as Zachary Hartwell, 30, was also killed.

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Both are seen drinking in the photo Dunn tweeted before the accident (left; Dunn is on left, and Hartwell across from him on right).

Dunn's Porsche 911 flew over a guardrail in West Goshen, Pa., hit a tree and burst into flames, police told TheWrap. Authorities arrived at about 2:38 a.m. to find it completely engulfed.

A preliminary investigation said excess speed may have been a cause of the crash, but police have not, as of yet, said whether alcohol was a factor.

Dunn was a longtime friend of Bam Margera, whose mother, April, called into a morning radio show to confirm the death.

Dunn was a member of Margera's CKY Crew and co-hosted "Proving Ground," which debuted last week on G4. He was best known for risky and deliberately inane stunts with Johnny Knoxville's "Jackass" crew.