CLEVELAND — Investigators have determined what caused the fiery crash that killed two Cleveland Metropolitan School District educators and injured two of their children last week in North Carolina.

Family members confirm to 3News that Donald Nunney, 55, suffered a heart attack while driving on the combined stretch of Interstate 40 and I-85 near Statesville on Aug. 15. Nunney's 50-year-old wife Maria was in the passenger seat of the Honda Odyssey, while two of their four children — ages 14 and 9 — were in the back seats.

North Carolina state troopers said the minivan went off the road and caught fire in the woods near the highway, hitting several trees before striking a large tree and coming to a stop. The crash left both Donald and Maria dead, while their son and daughter were both bad

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