Jackass star Ryan Dunn has died in a car crash, aged 34.
Bam Margera's mother April confirmed the news to TMZ.
Dunn and an unidentified person are believed to have died when his Porsche crashed at 3am local time at Route 322 and New Street in West Goshen Township, PA.
"We're deeply saddened by the passing of a member of the MTV family, Ryan Dunn," a post read on the official MTV Twitter page. "Our hearts and thoughts are with his friends and family."
A source from a fire company in the West Chester, PA area told 96.1 Kiss that both bodies were badly burned in the incident and that Dunn was identified by his tattoos and patches of facial hair.
The TV star posted a photograph on his Tumblr page hours before the accident showing him and two friends drinking in a bar.
Born on June 11, 1977 in Medina, OH, Dunn starred in all of the Jackass films, the last being Jackass 3D and its DVD spinoff Jackass 3.5. He was also a member of the CKY Crew with Margera.
His most recent show was Proving Ground, which launched earlier this month on G4.
In addition to his TV work and the Jackass series, Dunn also appeared in a number of feature films, including 2007 Jessica Simpson romantic comedy Blonde Ambition and Margera's 2003 independent movie Haggard.