The 34-year-old daredevil and an unnamed second person passed away in a car crash in Pennsylvania early on Monday, April Margera - the mother of his 'Jackass' co-star and close friend Bam Margera - has confirmed to gossip website TMZ.

According to reports, Ryan's Porsche flew over a guardrail on Route 322 at around 3am, hitting a tree before bursting into flames.

--------------------

Read more:

Irishman dies from herbal tea drink mixture

Reclusive heiress dies in New York leaving $500 million fortune

First Irishman dies on Mount Everest just days after his daughter is born
--------------------

It is not known who was driving the car.

Just a few hours before the accident, Ryan – who appeared in all of the 'Jackass' movies – posted a picture on his twitter page of himself drinking with friends.

In addition to being part of the 'Jackass' crew, Ryan – who turned 34 just over a week ago -  appeared alongside Bam in 'Viva La Bam' and in his friend's 2003 movie 'Haggard', as well as MTV show 'Homewrecker'.