updated 10/15/2010 AT 5:00 PM ET
•originally published 10/15/2010 AT 6:00 PM ET
Pro BMX dirt bike rider TJ Lavin is currently in critical condition at a Las Vegas hospital after attempting a dangerous stunt Thursday evening.
Lavin, an X Games star who hosted MTV’s Real World Road Rules Challenge for 10 seasons, was attempting a “nac nac” jump combination and couldn’t return his feet to the pedals before landing, ESPN reports.
The 33-year-old was competing in the Dew Tour Championships in Las Vegas, Nev., when the accident happened. He suffered a shattered right wrist and broken ribs and was knocked unconscious, it was reported.