A two-time Paralympic gold medalist groomed and sexually abused an intellectually disabled teammate at the 2020 Tokyo Games and the U.S. Olympic and Paralympic Training Center in Colorado, according to a disturbing lawsuit that further accuses sports officials of ignoring complaints and warning signs.

The suit alleges that swimmer Robert Griswold maliciously targeted and groomed fellow athlete Parker Egbert, securing his and his parents trust before repeatedly raping Egbert while they roomed together in the Olympic Village and later in Colorado.

Egbert required surgery and continuous medical care following the sexual assaults, according to the lawsuit filed Friday in the U.S. District Court for Colorado.

This case is a horrific tragedy, where a young man who defied all odds to become a world-class Paralympic swimmer had his life utterly shattered by rape and abuse when he was paired with a team member who was a violent sexual predator, the 63-page complaint states.