PEARL RIVER - A man was arrested Wednesday for the murder of his father after an autopsy revealed that the 74-year-old's death was a homicide. 

The St. Tammany Parish Sheriff's Office said 74-year-old Douglas LaFrance was found dead at his Pearl River home around 5 p.m. on May 26. An autopsy showed that LaFrance did not die of natural causes and the case was ruled a homicide. 

Deputies arrested LaFrance's son, 52-year-old Vincent LaFrance. He was booked for first-degree murder. 

Deputies said the investigation is ongoing and more charges may be possible.