This accident precipitated Kyle Busch's retaliation. Credit: Autostock

Kyle Busch, Mayfield penalized 25 points

DAYTONA BEACH, Fla. -- NASCAR announced Wednesday that Kyle Busch, driver of the No. 5 Chevrolet, has been fined, penalized points and placed on probation because of a rule infraction during the Coca-Cola 600 at Lowe's Motor Speedway.

Busch was in violation of Section 12-4-A (actions detrimental to stock car racing) of the NASCAR Rule Book. He disobeyed a directive from a NASCAR official, entered the racing surface without authorization and threw an object at another competitor's car during the event.

Upset BuschKyle Busch is upset with Casey Mears after a late caution Sign up for TrackPass now BUY THE NEXTEL i836

He has been fined $50,000, penalized 25 driver points and placed on probation until Dec. 31. The infraction also resulted in car owner Rick Hendrick being penalized 25 owner points.

In addition, the No. 19 Dodge team was found to be in violation of Section 12-4-A, 12-4-Q (car, car parts, components and/or equipment used that do not conform to NASCAR rules) and Section 20-12.8.1A (roof height too low in post-race inspection). That infraction resulted in crew chief Ted Andrews being fined $35,000, driver Jeremy Mayfield losing 25 driver points and car owner Ray Evernham losing 25 owner points.

Also, Don Richardson, crew member on the No. 5 Chevrolet team, has been fined $5,000 and placed on probation until Dec. 31. He violated 12-4-A, because of improper use of a NASCAR credential.