Fifteen-month-old Benjamin Seitz was left in his father 's hot car on July 7 . He died of hypothermia and a broken neck after being trapped for hours inside the vehicle. Prosecutors say a criminal investigation is still ongoing .
Fifteen-month-old Benjamin Seitz was left in his father 's hot car on July 7 . Legal analyst : Finding means death was caused by human action , not natural causes . Prosecutors say a criminal investigation is still ongoing .