NEW : Police imply person or persons involved in Sandra death from area . Tracy police Sgt . Police plan to church near mobile park home where Sandra 's family lived . Sandra was found in suitcase in a dairy-farm pond near her California home . Sandra Cantu 's had been missing since nearly 12 years from her home in Tracy , Tracy .
NEW : Police imply person or persons involved in Sandra death from area . Police plan to church near mobile park home where Sandra 's family lived . Sandra was found in suitcase in a dairy-farm pond near her California home . Sandra Cantu 's had been missing since nearly 12 years from her home in Tracy , Tracy .