The 34-year-old star was killed in a horrific car crash which saw his Porsche 911 burst into flames. Police the TV stunt superstar was so badly burned that he could only be identified by his tattoos.
His pal Zachary Hartwell has now also been formally identified as the second deceased in the 100mph crash which saw the car leave the road in West Goshen, Pennsylvania.
An post-mortem has already been carried out and copies of police records made available (see copy in our gallery bellow).
Despite this, the internet was flooded with rumours that the death was a PR stunt for 'a forthcoming Jackass movie.'
Even Yahoo reported it as potentially true saying: “Police identified Dunn's body, which was badly burned in the crash, by his tattoo and facial hair. This means that the public will not see the body and this, claim rumour-mongers, is a good sign that the star is not really dead.
“The conspiracy theorists have also pointed out that a trailer for a forthcoming film features Dunn as a man who dies, before returning as a ghost to hang out with his friend.”
Website Lockerz.com also re-published a fake news piece headlined 'Jackass star Ryan Dunn killed in car crash found to be a joke'
However, back in real life, the heartfelt outpourings from Ryan Dunn's fellow Jackass stars could not have been more real.
After US film critic Roger Ebert attacked Dunn for drink-driving Bam Margera used Twitter to say: “I just lost my best friend, I have been crying hysterical for a full day and piece of s**t roger ebert has the gall to put in his 2 cents about a jackass drunk driving and [he is] one, f**k you!”
Jackass co-star Johnny Knoxville simply said: “Today I lost my brother Ryan Dunn. My heart goes out to his family and his beloved Angie. Rip Ryan, I love you buddy.”