Ryan Dunn died in car accident at the age of 34

 This is the news from TMZ.com

 Dunn was driving the Porsche early Monday morning -- when he lost control, veered off the road, and crashed in a wooded area in Pennsylvania ... killing Dunn and an unidentified passenger.

When officers arrived to the scene, the car was engulfed in flames. The charred remains of the vehicle were eventually towed away.

Cops are investigating the cause of the accident -- but officials believe speed may have been a factor.