MINNEAPOLIS (AP) – Federal prosecutors say a Minnesota couple accused in the drowning death of their 21-month-old son left their two children unsupervised for nearly two hours. Twenty-five-year-old Sabrina Louis and her husband, 54-year-old Eddy Louis, of Bloomington, were charged Tuesday with second-degree manslaughter. Authorities say the couple left the house before 8 a.m. Saturday and went shopping at Cub Foods and Walmart. They told police they thought the children would remain asleep until they returned.