Investigators gathered boxes of potential evidence and loaded them into vehicles.
A source tells Action News the raid focused on a chiropractor business inside the Fitness Center, and possible insurance fraud related to billing.
A local doctor owns both facilities. Action News tried to talk with him, but he had no comment. We're not releasing his name because no charges have been filed.
Members of the gym arrived throughout the day only to learn the gym was closed.
Public records of the doctor at the center of the investigation reveal financial problems in recent years including a civil suit, and tax liens totaling nearly $60,000.
The FBI and other authorities could not comment on the case because the search warrant affidavits are sealed.