Roger Ebert - Ryan Dunn dead: Bam Margera's fury as

Fury of Ryan Dunn's grieving co-star as Roger Ebert accuses Jackass stuntman of drink-driving.hours after fatal horror Porsche crash.Roger Ebert - Ryan Dunn dead: Bam Margera's fury as

• Bam Margera furious after American film critic tweets: 'Friends don't let jackasses drink and drive'
• Dunn posted Twitter picture of himself in a bar hours before crash
• Autopsy underway to determine if alcohol play a part
• Dunn was charged with drink-driving offence back in 2005
• Star's burnt body 'had to be identified by his tattoos'
• Johnny Knoxville leads tributes saying: 'Today I lost my brother'

Jackass star Bam Margera is outraged after film critic Roger Ebert tweeted a message, blaming his co-star Ryan Dunn's fatal car smash on drink-driving.

Dunn, 34, died when his sports car flew off the road at around 2.30am on Monday while he was driving to his home in West Goshen, Pennsylvania, following a night out in a bar with friends.

Now his fellow Jackass co-star Margera, 31, has broken his silence after Ebert criticised Dunn hours after the smash, which also claimed the life of another-as-yet unidentified male passenger.

Taking to Twitter soon after the news broke, 69-year-old Ebert, who won a Pulitzer Prize for Criticism, tweeted: 'Friends don't let jackasses drink and drive.' A link to a news story about the incident accompanied his comment.

Bam finally went to his Twitter to blast Ebert late last night, saying: '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*** you!"

Tragic: Jackass star Ryan Dunn was killed in a high-speed car crash yesterday. Film critic Roger Ebert tweeted a message insinuating the Dunn's accident was caused by drink-driving

Wreckage: The charred remains of the Porsche 911 GT3 are towed away as police survey the scene following the smash in Pennsylvania yesterday which also killed another as-yet-unidentified male

Anger: Dunn's co-star Bam Margera has hit out at Ebert

He added: 'Millions of people are crying right now, shut your fat f*****g mouth!'

And sources told TMZ that Dunn drank at least three light beers and three shots between 10.30pm and 2.10am at Barnaby's of America bar before the accident.

Fellow Twitter users were also angered by Ebert's remarks. One tweeter, @ebertchicago, responded: 'That was in disgustingly poor taste,' while another added: 'Why is this a joke? He is still a person. Have some respect.'

Celebrity gossip blogger waded in to the row too, branding Ebert's comments in poor taste.

An article on Perez's blog read: 'We certainly agree that driving after drinking is wrong, we think there's no reason - especially RIGHT NOW - that anyone should be pointing fingers or poking fun at a truly tragic situation.

'Everyone makes mistake, and this is somebody's son. Too soon, Roger.'

But Ebert stuck to his guns, merely retweeting Hilton's article with the comment: 'Perez Hilton's readers agree with me and not with Perez about my tweet on Ryan Dunn.

'He drank, he drove, 2 people died.'

Police said they found the burning wreckage of Dunn's 2007 Porsche 911 GT3, which was capable of reaching 190mph, in the woods off the road fully engulfed in flames.

Last picture: Just hours before his death, Ryan (left) tweeted this photograph of him enjoying a night out with friends. It is not clear whether one of the other two men pictured was his male passenger