WEATHERFORD, Texas (CBSDFW.COM) – Nine people have been arrested in Parker County in connection with an illegal horse racing track, often referred to as “brush tracks.”

Parker County Sheriff Larry Fowler said the arrests were made Sunday afternoon stemming from a weeks-long investigation.

Investigators reported more than 1,000 people attended the race, located at 1377 Walnut Creek Drive in Springtown.

No spectators were arrested.

Illegal horse track in Parker County (Parker Co. Sheriff’s Office)

Texas DPS spear-headed the investigation, where dozens of horses were found to be forced to race illegally in an unsanctioned race.

“The Racing Act was established in order to keep horses from racing more than once in a 24-hour period,” Sheriff Fowler said. “Most of the horses and jockeys were found to be racing twice in the same weekend. These laws were created to protect them.” Sheriff Fowler added numerous large syringes and drug paraphernalia were found on the scene.

“Some of the syringes were empty and some were full,” said Sheriff Fowler. “The substances are being tested for illegal substances, potentially harmful to equines. It allows a horse to be pushed to the limits under a race, but can cause serious health conditions and even result in the death of a horse.”

The Texas Animal Health Commission completed over 40 livestock inspections on vehicles which hauled 82 horses and found 147 Class C violations of “no equine infectious anemia (Coggins) or Piroplasmosis test.” Investigators found only one horse had the proper paperwork.

Law enforcement officials said illegal shocking devices typically used to enhance their performance horses were also found on the scene.

Evidence from illegal horse racing operation in Parker County. (Parker Co. Sheriff’s Office)

“Working in collaboration with outside agencies always makes for a better outcome during any investigation,” Sheriff Fowler said. “We would also like to thank the Texas Racing Commission, Texas State Animal Health Commission and the Texas and Southwestern Cattle Raisers Association for their assistance in the operation.”

Sheriff Fowler said five of the arrested individuals had ICE detainers placed on them.

An additional man, identified as Ricardo Guerrero Perez, 56, of Fort Worth, was arrested on a parole warrant and a possession of marijuana warrant out of Childress County.

The woman who was the head of the illegal horse race operation was identified as Yesenia Garza, 41, of Arlington.

Yesenia Garza – alleged head of illegal horse racing operation in Parker County (Parker Co. Sheriff’s Office)

Jessica Judith Davila, 40, of Fort Worth; Blanca Gonsalez, 50, of Springtown; Edgar Valentin Mendoza, 35, of Fort Worth; Juan Francisco Renteria, 34, of Dallas; Ever Noruf Rodriguez-Rodriguez, 32, of Arlington; Pablo Erasmo Solis, 32, of Irving; Ivan Raymundo Suarez, 23, of Dallas; and Alonso Venzor, 21, of Irving.

Those with ICE detainers will be held without bond.  All of the others have their bonds set at $15,000.