Investigators would not go into details. But Action News has learned the girl's 12-year-old brother had a run in with the intruder at their Rancho Calaveras home.
The boy called his parents moments later, once he found his sister had been stabbed. The young girl was rushed to the hospital where she was pronounced dead. This morning the search continues for the killer.
Calaveras County Sheriff Jim Macedo said, "Are doing a house to house search and in some cases we are searching extensively into attics storage sheds, it is a difficult area to search it is rural, remote."
Nieghbors say they can't believe a child was murdered in their small town. The suspect is considered armed and dangerous.