Roger Penske on Tuesday said he has suspended the president of Team Penske along with three others for two races for their roles in the cheating scandal that has rocked IndyCar ahead of the Indianapolis 500.

Tim Cindric, who oversees all of Team Penske’s operations and is the strategist for Indy 500 defending winner Josef Newgarden, is the top name to receive a two-race suspension. Also suspended was team managing director Ron Ruzewski, Newgarden engineer Luke Mason and senior data engineer Robbie Atkinson.

Ruzewski and Atkinson both work on Will Power’s car — Ruzewski is his strategist — and Power is the only of the three Penske drivers not accused of any wrongdoing in the push-to-pass scandal.

The suspensions are for two races, which cover this weekend’s event on the Indianapolis Motor Speedway road course and the Indy 500, which Penske is trying to win for a record-extending 20th time.

“I recognize the magnitude of what occurred and the impact it continues to have on the sport to which I’ve dedicated so many decades,” Penske said in a statement. “Everyone at Team Penske along with our fans and business partners should know that I apologize for the errors that were made and I deeply regret them.”