NEW : Digging to begin this month at old Manson family ranch . Apparently , cadaver dog may have found five bodies ; soil tests inconclusive . Police found evidence of possible remains at three of the same spots . Manson 's top lieutenant does n't think anyone else was killed at hideout .
NEW : Digging to begin this month at old Manson family ranch . Detective , cadaver dog may have found five graves ; soil tests inconclusive . Scientists find evidence of possible remains at three of the same spots . Manson 's top lieutenant does n't believe anyone else was killed at hideout .