Authorities in Texas say they're investigating the Karolyi Ranch that was a training site for U.S. Olympic gymnasts until a sexual abuse case against a doctor cast a shadow over the facility.
Walker County Sheriff's Office spokeswoman Marlene Wells would not say what the investigation is about or when it began. But she confirmed Monday that the office has an open investigation.
Gymnasts preyed upon by former team doctor Larry Nassar have said he sexually assaulted them while they were training at the ranch outside Huntsville.
USA Gymnastics announced last week that it had ended its agreement to have the ranch serve as the National Training Center.
USA Gymnastics had already backed out of an agreement to buy the training facility.
A message left on the ranch's voicemail wasn't returned.