Three-time Olympic gold medalist Gabby Thomas said she was verbally abused at the Grand Slam Track meet in Philadelphia last weekend, the latest incident of harassment the American has reported this year.

The three-time gold medalist posted about the incident on social media earlier in the week, prompting an investigation by Grand Slam Track.

Grand Slam Track is investigating a fan who said he heckled sprinter Gabby Thomas during an event in Philadelphia this past weekend so that he could win his bet, per Margaret Fleming of Front Office Sports.