SAN ANTONIO – The Bexar County sheriff says cell phone data provided the evidence in the death of a mother and son in March that was ruled a murder/suicide. Savannah Kriger and her three-year-old son, Kaiden Kriger, were the focus of an Amber Alert before they were found dead at Tom Slick Park on March 19. The little boy was at the center of a custody battle, Sheriff Javier Salazar said.