FORT EDWARD, N.Y. (AP) — Authorities say a heart attack killed a 37-year-old upstate New York man who lost six children in a house fire two years ago.

Lewis Carl Smith II was found unresponsive in a vehicle late Saturday in the village of Fort Edward, 45 miles north of Albany. Fort Edward police told the Post-Star of Glens Falls (http://bit.ly/LZJE5B ) that an autopsy showed heart disease caused his death.