Parks and Recreation - Season 7‘Parks and Recreation’ ‘Pie-mary’ Episode 708 — Pictured: (l-r) Colton Dunn as Brett, Harris Wittels as Harris — (Ben Cohen/NBC/NBCU Photo Bank via Getty) Autopsy results have revealed “Parks and Recreation” writer/producer Harris Wittels died from an accidental heroin overdose. The 30 year old was found dead at his Los Angeles home in February, and initial reports suggested he passed away from a suspected drug overdose. Officials have since ruled he died from “acute heroin intoxication,” according to the coroner’s report obtained by E! News. The documents also detail the state of Harris’ home at the time of his death, as investigators noted “drug paraphernalia,