The American Motorcyclist Association (AMA) has suspended professional motocross rider Jason Lawrence for 'unacceptable behaviour detrimental to the sport'.
According to AMA officials, Lawrence - a 2008 AMA Supercross Lites champion - was arrested for disorderly conduct at Red Bud Track & Trail on July 4 while in Buchanan, Michigan, for round six of the AMA Toyota Motocross Series Presented by FMF.
The incident follows a penalty and suspended fine issued in June for conduct detrimental to the sport at the Freestone County Raceway during round three of the series in Wortham, Texas.
"Mr. Lawrence is suspended indefinitely," said AMA Director of Motocross/Supercross/ATV Ryan Holliday. "In addition, the $25,000 fine that was issued after the June incident and suspended contingent upon the successful completion of a one-year probation will now be imposed."
Holliday added that the AMA would not reconsider Lawrence's status until the conclusion of the 2008 season.
Lawrence was notified of the suspension at the race on July 5.
