'Jackass' star Ryan Dunn died this morning in a car crash in Pennsylvania. He was 34.
Celebrities quickly shared their reactions to the news through Twitter, including some of Dunn's co-stars.
There is not yet an official cause for the crash, though Dunn posted to Twitter this picture of himself drinking with friends hours before it took place.
The Associated Press has released a series of photos from the scene of the car crash. See those below. Police say that Dunn and one passenger died in the accident.