No new graves were discovered on the grounds of a Calaveras County home where the skeletal remains of three people have been found, authorities said, but the search was expected to continue for weeks. Calaveras County Sheriff Claud Ballard said there is a strong possibility that more grisly discoveries will be made on the three-acre parcel in Wilseyville. The home was frequented by Leonard Thomas Lake, 39, who has been linked by police to eight missing Northern California people. Lake killed himself after being arrested by South San Francisco police. Ballard said Lake’s ex-wife was to arrive at the home to help in the search for bodies. Coroner’s officials have not yet identified the three skeletons.