Published: Nov 01, 2010 3:47 PM EDT
Updated: Nov 01, 2010 12:47 PM EDT

ERBO, Fla. (AP) - Authorities are investigating the deaths of at least 20 dogs at a greyhound park in the Panhandle.

The Washington County Sheriff's Office arrested the dogs' trainer, Ronnie Williams, on Friday and charged him with animal cruelty. A local greyhound adoption group alerted authorities that Williams had brought in eight underweight dogs, triggering an investigation by the Florida Department of Pari-Mutuel Wagering.

It's unclear exactly how many dogs were found dead at Ebro Greyhound Park. The park's assistant general manager Mark Hess says Williams' dogs were healthy during the season, which ended Sept. 25. Hess says Williams continued to come to the track every day to let out two dogs for exercise and told other trainers he had only those two left.

It wasn't known whether Williams has an attorney.