Authorities in Illinois have confirmed that last month’s deaths of a mother, father, and their 1- and 6-year-old children were the result of a murder-suicide carried out by the father. According to the Chicago Sun-Times, Brandyn Lee, 34, fatally shot his girlfriend, Jaquelon Gaskin, 28, their daughter, Gianna Lee, 6, and son, Giovanni Lee, 1, before killing himself at …