Three members of the Reaume Brothers Racing No. 33 Craftsman Truck Series team have been suspended for three races by NASCAR after a piece of tungsten ballast came off their truck during last Saturday’s race at Atlanta Motor Speedway.

The suspensions were announced Tuesday.

Crew chief Gregory Rayl and crew members Matthew Crossman and Travis Armstrong were suspended because of the safety violation. Mason Massey is the team’s driver.

MORE: Xfinity driver Josh Williams suspended for one race

In a tweet following the announcement of the penalty, the team said it will not file an appeal. “The ballast became dislodged only after the left side ballast container had significant contact with the racing surface,” according to the statement. “We would like to be clear that there was no negligence on the part of RBR personnel.”

NASCAR also announced Tuesday that Truck Series owner/driver Cory Roper, who had been suspended indefinitely for violating the substance abuse policy, has been reinstated.

The Cup, Xfinity and Truck Series are scheduled to race this weekend at Circuit of the Americas.

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Three Reaume Brothers Racing team members suspended by NASCAR originally appeared on NBCSports.com