A lawsuit accuses the group trying to bring skateboarding into the 2020 Olympics of skirting anti-doping rules and giving favors to an IOC official that led to the ouster of a rival group from the negotiating table.
Skateboarding is one of five sports the International Olympic Committee will vote on Wednesday for possible inclusion in the Tokyo Games, but there's friction between groups that seek to run the sport.
A large portion of the lawsuit, filed last week in California, concerns anti-doping — an issue in the headlines, as Olympic leaders sort out which Russian athletes are eligible to compete at the Rio Games.