since christman's address is in an unincorporated county area. the sheriff's office, not the walnut creek police department, is the agency tasked with monitoring his activities. the sheriff's office says they learned of christman's move on wednesday. and, out of caution, not by law. deputies went door-to-door thursday passing out fliers, detailing christman's past and warning he's now a neighbor. in 1989, he was convicted of lewd or lascivious acts with a child under 14 years of age. then in 93, he served time for oral copulation. >> "in every direction from this mans house, um, there are little children." a representative from liberty health would only confirm that christman is under their supervision. the sheriff's office says liberty health helped place christman here, but the representative wouldn't explain the reasoning behind it. >> "i can't comment on anything." >> "it's a tough situation because i realize that he has to live somewhere and i appreciate that and i appreciate people getting second chances, but i think this is not an appropri