(Scott G Winterton | Pool Photo) Court hearing for Jayden Sterzer, who pleaded guilty to sexual abuse and murder of Kailey Vijil in 2015, at the Matheson Courthouse in Salt Lake City on Monday, Dec. 11, 2017. He was later sentenced to a secure juvenile facility, and the now-19-year-old was charged Wednesday, Aug. 29, 2019, with assaulting a fellow inmate.