Jim Plunkett Son Death?

Reading about the son of former raider quarterback Jim Plunkett. I saw obituary in San Jose Mercury News abt his son's death..always a big fan of senior jim plunkett.
How did jim plunkett's son die? What was the cause of his death?
He seems over it now.

james plunkett's son died nov.22 2008 at 25 years of age.
i did a search under james w. plunkett jr obituary
i was not able to find out how he died.
I'd be interested in the answer too.

Found this:
James William Plunkett Jr. April 14, 1983 - November 22, 2008 We will always cherish your loving personality and wonderful sense of humor. Life is not the same without you.