Investigators have interviewed registered sex offenders in the area, but won't say if sexual assault was part of the crime. "This is a sad time," said Calaveras County Sheriff Gary Kuntz. "We will not rest until we capture the responsible person."
Leila Fowler was stabbed to death at her home last weekend. Her 12-year-old brother saw an intruder in the family's home before finding his sister suffering from stab wounds, CNN reported.
Police are describing the suspect as a white or Hispanic male with a muscular build. He is about six-feet-tall and was wearing a black long-sleeved shirt and blue pants.
Police said they found fingerprints during a search of the Valley Springs home and have collected DNA.