"He had injuries to his genital area, which is consistent with sexual abuse," she said.
CPS had not previously investigated Scott for treatment of Dakoda, her only child, Olguin said.
"If your skin is real tender I guess maybe you'd get bruises," Jack Scott said.
To Silva, a grandmother and a 21-year police veteran, the sight of the child's bruised and beaten body shook her to the core.
Dakoda had fallen from his crib, Gutierrez told authorities upon arrival there.
Scott was arrested Thursday and charged with injury to a child by omission.He left marks, welts and a black eye on the 23-month-old.He had spanked the child with a wood fork and once squeezed Dakoda, digging his fingers into his armpits, shook the boy and then threw him sideways onto a toy.The division did contact authorities in California, where Gutierrez has a child, to notify them that he had been arrested related to abuse.CPS workers also believe drugs were being used around the child, which could have contributed to frustration with the infant and his needs on the part of Scott, or her boyfriend.Gutierrez's attorney, Terrence Gaiser, said his client has denied any wrongdoing.