ROCHESTER HILLS (WWJ) – An autopsy shows a jogger found dead in a park bathroom died of heart failure.

Oakland County Sheriff’s detectives said, according to relatives, the 62-year-old Shelby Twp. man has been training for the Boston Marathon. He was wearing a jogging suit when he died.

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The man’s body was discovered by Rochester Hills city employees Wednesday at Veterans Memorial Park. Sheriffs’ officials say the workers had to break into the locked restroom to find him.

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The Oakland County Medical Examiner found the man had a family history of heart disease.

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His name was not immediately released.