AP: "Simmons' body was found Sunday night in his hot tub, investigators said. An autopsy by the state medical examiner's office concluded Monday that he died from accidental drowning with heart disease as a contributing factor."
WLBZ (Bangor, Maine): "The Knox County Sheriff's Department says Matthew Simmons, the founder of the Ocean Energy Institute, drowned at his house on North Haven late Sunday night."
WABI (Bangor, Maine): "Simmons is survived by his wife, Ellen, and their five daughters. In lieu of flowers, the family asks that donations be made to the Ocean Energy Research Institute in Rockland."