According to Lorain County Chief Deputy Coroner Dr. Frank Miller, Mazzola was found face down on his water bed, restrained with handcuffs, chains and padlocks.
An autopsy determined the preliminary cause of death was asphyxia due to airway obstruction by foreign body.
"The manner of death is pending further investigation and will be released when the case is finalized," the coroner's office said in a press release.
Mazzola had a sex toy in his throat, which apparently obstructed his breathing, Miller said.
He was also wearing a leather mask with the eyes and mouth zipped shut and a two-piece metal sphere covering his head, according to the coroner.
Investigators say Mazzola's body was discovered by a co-worker.
According to detectives, Mazzola had help with the bondage equipment, but his assistant had left before he died.
The deceased, Sam Mazzola, was in the news last year when a bear at the somewhat strange animal sanctuary he ran killed an employee.