An autopsy is pending for a Florida man whose body was found entangled in a bulldozer.

Putnam County Sheriff's authorities say 61-year-old Tommy Brenner was found dead Friday by a friend. Brenner was using the bulldozer to clear a plot of land when he somehow became stuck in the hydraulic arms that raise the machine's bucket.

It's unclear if he died from natural causes before the accident or if he was fatally injured in the machinery.