MADINAH, 18 July  — A toddler who was left to play alone at home drowned after falling into the septic tank of his house here, Al-Madinah newspaper reported yesterday. The child died before he could be rescued from the tank, the paper said. In another domestic accident in the city, a two-year-old girl sustained serious burns when she fell into a pot of boiled water her mother had kept in the kitchen. (AN)