San Diego Toddler Taken from Mother Dies in Foster Care 4 Months Later - Mom Sues CountyThe tragic death of 22-month-old Tyler Walter who was taken away from his mother and placed into foster care with a 19-year-old foster mother has been reported by ABC News 10 in San Diego. "Adults were put in charge of Tyler Walter's life to give him a chance to flourish. Instead, Tyler died before he could reach two. The biological mother of the 22-month-old boy believes the system failed in its duty. Tyler Walter died two months after being placed with a foster parent. In a claim filed against the County of San Diego, Lisa Walter stated that her son Tyler, 'was healthy when he was in my care he was thriving, he needed his mother and placing him with my 19-year-old niece was negligent.' Tyler Walter died Sept. 22, 2018. The cause of death listed on his autopsy is blunt head trauma." Attorney Shawn McMillan is representing the mother in her lawsuit against the County of San Diego. He was recently interviewed by ABC News 10.